In mathematics, the sine is a trigonometric function of an angle. The sine of any angle is the length of the far side of the triangle (the "opposite") divided by the long side (the "hypotenuse") ✅To learn more about Trigonometry, enroll in our full course now: infinitylearn.com/cbse-fullcourse?TH-cam&DME&ZsJzdv34AI To watch more videos related to Trigonometry, click here: bit.ly/TrigonometryVideos_DMYT
I love watching how much this channel has progressed over the years. If you compare this 7 year old video with the recent 2020 videos this video is basic yet so explanatory. I love this channel and the easy visual representations. Hats of to the Don't memorize Visual team!
Ok let me help your video title out. Sine: Imagine a circle. Mark 2 points anywhere on the circumference and connect them with a line. This is called a chord. Bisect the chord so you find its mid point on the chord. Now from the centre of the circle draw a line to the mid point. This will give 2 lines that look like a T - now complete a triangle by putting in the 2 hypothenuses. Here's the answer with some notes: Sine: means half of a chord. Because you bisect the line, it's a 90 degrees triangle - always. There are 180 degrees in a triangle. One is 90 degrees due to the bisected line. The other two angles therefore add up to 90 degrees. So the cosine is simply the sign displaced or 'phased' by 90 degrees. So effectively sine and cosine are the same thing just out of phase by 90 degrees. If you think in terms of complex numbers, the 'I' or imaginary part ('j' is used in electrical engineering to disambiguate against current - which uses 'I') is the sine part on the complex number - which is the half of a chord part of the triangle (or the opposite side). The cos part is the adjacent side. And as you've probably guessed Z is the hypothenuse.
Sine function is the function which gives an output value which is the ratio of sidees of a right angle triangle.. As it is identity type function the output values is always ratio of opp/hypotenuse . These functions are nothing but just the ratios of the sides of triangle
@@aetheonpro396, Blue Pastel actually quoted its official definition. Keep in mind that the hypotenuse is _(by definition!)_ the longest side on a triangle, thus the ratio of ANY side to the hypotenuse is ALWAYS 1.0 or less. Due to the particular definitions of trigonometric functions (sine, cosine, tangent) the only parameter that actually affects the ratio is the angle you specify as input. This is why you can simply type it into a calculator and get some result -- but if you don't know what the function is actually _for,_ the result is meaningless.
I was an international student who couldn't speak English at first during my school years, and I had a Scottish maths teacher that I can barely understand her. When she was on about trigs and talking about the names of the triangle parts... I was like *"Who's Jason? ಠ_ಠ Why Jason?"* and it was actually "adjacent".
I never attend online classes but suddenly I have exams.....and you are the reason I passed my maths trigonometry test with good marks . Thank you so much :)
This helped me to complete the story: sinθ = Opposite/Hypotenuse = 3 / 5 = 0.6 So sinθ = 0.6, to get the angle for θ, one needs to get rid of the sin. θ = Arcsine(0.6) = 36.86º (arcsine is the inverse sine)
I am not a mathematician but I tried to figure out what sine means. It is a property (a constant characteristic, or the nature) of a right angle triangle. In particular it is a property of the opposite and the hypotenuse. So as the hypotenuse is extended (made longer) the length of the opposite will increase at a fixed rate. Sine shows the rate of change. So for example if the the sine is 1/2 (or 0.5) then every time you double the length of the hypotenuse, the opposite will increase by half as much. This was just an example; I do not know if there is any actual triangle that has those results. In short, the sine tells you the rate of change between the opposite and the hypotenuse as either one of them is increased in length. The above was calculated using the opposite and hypotenuse. Calculators however can calculate the sine ratio from the angle, just type the angle in degrees, press sine and it will give you the ratio. (I do not know what formula the calculator is using to perform the calculation though). As another example, you have two people trying to reach the same point on a map. One person walks from their start position straight to the desired meeting point; another person starts from a different point (but 90 deg from the other person) and has to walk at diagonal to the meeting point (just like an opposite and a hypotenuse). The sine tells you how much longer the hypotenuse-walking person has to walk. For example if the sine is 0.75, the hypotenuse-walking person walks 75 units out of 100 units; the other person only walk 25 units of 100 units. Mathematicians on here if you could confirm my understanding is correct or not.
@@rajibdhungana Hello Rajib, thanks for your reply! No I don't have Twitter. Maybe I should get one. I'm glad you liked my comment. Lately I've found math very interesting.
U seem to have exactly explained what sine is..that it's a ratio, which gives the incremental of one variable vis a vis the other. This type of fundamental approach is required by young students who aimlessly and senselessly tend to mug up in order to score marks.
@@suryas6429 I'm honoured you read my comment, and I'm glad to hear I got the principle correct. I find when math is thought through in such a way it becomes quite interesting.
@@rajibdhungana I'm sorry for the late reply. I don't have twitter. Maybe I will try to make some math videos in the future (despite not being a mathematician).
Though I had a very clear idea about this.......I wanted to hear your non-memorising explaination. This is the elaboration of the idea I wanted to post on youtube.
Great information conveyance! Like First vid i have seen. I hope the ‘dont memorise’ mantra is literal and the channel teaches ‘how’ to learn and not ‘what’ to learn. I will investigate further:)
Hi Nikhil, let me ask you a few questions! When you are standing, what's the angle between your feet and your floor? At what angles are the walls of your house placed with respect to the floor? At what angle is your building with respect to the ground? Do these questions answer your question?
awsome, the quality of studies one get in this era is simply awsome. in our time the techology was not so robust, simple, economic and convenient to use. now anyone can get the clear and accurate answer for their quary quickly. hats off to the potential of youtube world and their channels.
theta means whatever the reference angle is. if you have a triangle and there's a triangle that the question you're given is refering to, they'll mark it as ∅ (theta). hope this helps
when I insert in any calculater "sin(n)" where n is any number I get a direct ANSWER! without the calulater knowing any value of opp and hyp I would really love to know why is the calculater gives it directly and the most important is why in the world they needed these trig-functions in the first place love your chanel
To answer the original question, because sine is a *ratio of* two sides on a *right triangle,* any specific angle represents a specific shape of triangle and the actual size of the triangle doesn't matter because the lengths cancel each other out. E.g. for a 3-4-5 (as shown in video) or 6-8-10 triangle, the sine is 0.6 for both.
Straight answer: .6 is merely 60% of the overall length of the hypotenuse. Just like the cosine (4/5 = .8) is 80% of the overall length of the hypotenuse. It is not directly related to the angle itself. The statement "the sine of theta (angle)" is the mathematical way of saying "the side opposite of the angle". The statement "the cosine of theta (angle)" is the mathematical way of saying "the side adjacent to the angle". The ratio is pertaining to the hypotenuse, not the angle. Hope that helps.
Thank you so much for your appreciation. We will try our best to make more video content. In the meanwhile, you can check our entire library of content on dontmemorise.com/
Thanks for the visit and for your appreciation. We are glad that you understood the concept. For more videos, please visit our website - dontmemorise.com/
What does the 0.6 units mean? It can't be the length of any side because we all ready have that. It can't be the size of the angle because we all ready know that. What does that "0.6" represent?
0.6 is just a ratio. The ratio is a just the starting point for calculations.For example, If you know the ratio is 0.6 then if the hypotenuse is 100 feet long you know that the length of the opposite side of the triangle is 60 feet. Or, if you know the distance from home plate to second base is 150 feet, then you know that to steal second the runner on first has to sprint 90 feet before the catcher can throw the ball 150 feet.
You're most welcome. We are glad that you understood the concept. We are happy that we could help you learn.For more videos, please visit our website - dontmemorise.com/
because the sine function is defined as the ratio of the opposite side to the hypotenuse in a right angled triangle. In other words thats what sinx actually means and nothing else, its just a function
@@imrsk Well Trigonometry is just used to make things easier u know make calculations easier. It is just a tool. Let's say u r doing some geometry problem and u know trigonometry than u can make some constructions and simplify ur calculations. It's just like using the quadratic formula instead of factorising an equation like x^2 - 7x +11. Try doing it both the ways good luck.
You explain the concept pretty well, but can you tell where exactly do we use these functions in real life? For a Marketeer, Lawyer, Doctor, Data Analyst, Accountant etc..? I'm just curious to know..
I use cosine and sine to program elliptical orbits of Kepler bodies (planets, stars and so on) in 3D space. Also use cosine to program gerstner waves for oceans. There many use cases and this video is awful just like school system as sine and cosine are so much more than sides of a triangle.
In "Real Life" here on Earth I use cosine and sine to help calculate the True Vertical Depth and offset in offshore well drilling. TVD is required for hydrostatic pressure calculations. Offset and azimuth desired "among other things" to avoid crashing into other oil and gas wells. Hope that helps 😜
Actually there are 6 such functions Sine(sin) cosine(cos) tangent(tan) cosecant(cosec) secant(sec) and cotangent(cot) These functions are the different ratios of the sides. So Sin = opp/hyp Cos = adj/hyp Tan = opp/adj Cosec = hyp/opp Sec = hyp/adj Cot = adj/opp This video only explains the sine(sin) function
since the length in cm of the opposite side is 3, and the hypotenuse is 5.....so sin theta will be equal to opp/hyp, in this case 3/5....by calculating further to bring it to decimals, it becomes 0.6......ik its late but i still wanted to explain. Feels good.
Well in this case it has no use This is just an example The actual uses of sine and others is in getting an angle or finding a side in a much more complicated case
It's not a definition. It's rather the other way round. The ratio of perpendicular and hypotenuse is named as sine. If it's a reversed ratio, then it's called cosec
Hi Soma, we've started working on Calculus content and our first set of videos will be out in the first half of July. Stay subscribe to our TH-cam channel to stay updated: bit.ly/DontMemoriseTH-cam :)
I love the masterful reduction to simple elements you make which provide brain-balm to those who are nervous of maths because of its complex abstraction.
In mathematics, the sine is a trigonometric function of an angle. The sine of any angle is the length of the far side of the triangle (the "opposite") divided by the long side (the "hypotenuse")
✅To learn more about Trigonometry, enroll in our full course now: infinitylearn.com/cbse-fullcourse?TH-cam&DME&ZsJzdv34AI
To watch more videos related to Trigonometry, click here: bit.ly/TrigonometryVideos_DMYT
I love watching how much this channel has progressed over the years. If you compare this 7 year old video with the recent 2020 videos this video is basic yet so explanatory. I love this channel and the easy visual representations. Hats of to the Don't memorize Visual team!
this channel has misleading titles
ITS 8 YEAR OLD WTF!?!?
the trig functions can be defined in therms of a unit circle
Ok let me help your video title out.
Sine: Imagine a circle. Mark 2 points anywhere on the circumference and connect them with a line. This is called a chord. Bisect the chord so you find its mid point on the chord.
Now from the centre of the circle draw a line to the mid point. This will give 2 lines that look like a T - now complete a triangle by putting in the 2 hypothenuses.
Here's the answer with some notes: Sine: means half of a chord. Because you bisect the line, it's a 90 degrees triangle - always. There are 180 degrees in a triangle. One is 90 degrees due to the bisected line. The other two angles therefore add up to 90 degrees. So the cosine is simply the sign displaced or 'phased' by 90 degrees. So effectively sine and cosine are the same thing just out of phase by 90 degrees.
If you think in terms of complex numbers, the 'I' or imaginary part ('j' is used in electrical engineering to disambiguate against current - which uses 'I') is the sine part on the complex number - which is the half of a chord part of the triangle (or the opposite side). The cos part is the adjacent side. And as you've probably guessed Z is the hypothenuse.
better than the video. just a very shallow explanation.
U r awesome
Awesome bro❤️✨
Great explanation! Maybe you should make a video explaining this, it would be even much better
Thank you
You didn't explain what the sine function is, just how to calculate it.
I don't believe she knows.
Sine function is the function which gives an output value which is the ratio of sidees of a right angle triangle..
As it is identity type function the output values is always ratio of opp/hypotenuse .
These functions are nothing but just the ratios of the sides of triangle
@@socialmediashiva Wrong!
If what you say is true, how would you explain sin190? Or any angle above 180?
@@gk-qf9hv in 11th or higher classes u will know
@@socialmediashiva If what you say is true, how would you explain sin190? Or any angle above 180?
After watching countless videos, this was the only one that had finally started to make sense to me. Thank you!
You didn't really explain what sine of an angle really means
They did. Were you just thinking about the unit circle application again?
Sine, in simple terms, means the ratio of the perpendicular to the hypotenuse of a right-angled triangle
Blue Pastel
That's not what it means... Why does sine give a decimal in a scientific calculator????….
@@aetheonpro396, Blue Pastel actually quoted its official definition. Keep in mind that the hypotenuse is _(by definition!)_ the longest side on a triangle, thus the ratio of ANY side to the hypotenuse is ALWAYS 1.0 or less.
Due to the particular definitions of trigonometric functions (sine, cosine, tangent) the only parameter that actually affects the ratio is the angle you specify as input. This is why you can simply type it into a calculator and get some result -- but if you don't know what the function is actually _for,_ the result is meaningless.
No
I was an international student who couldn't speak English at first during my school years, and I had a Scottish maths teacher that I can barely understand her.
When she was on about trigs and talking about the names of the triangle parts... I was like *"Who's Jason? ಠ_ಠ Why Jason?"* and it was actually "adjacent".
lol no way xd
2:23 how about an acute angle, you forgot about that!?
It's not just right triangles we are dealing with, opposite is acute.
i love how they explain . no theoretical sh!t nothing useless direct point and concept clear THANKS ALOT
I never attend online classes but suddenly I have exams.....and you are the reason I passed my maths trigonometry test with good marks .
Thank you so much :)
The video is 3:14 long, which looks like 3.14, a 2 dp (decimal place) approximation of π (pi).
This helped me to complete the story:
sinθ = Opposite/Hypotenuse = 3 / 5 = 0.6
So sinθ = 0.6, to get the angle for θ, one needs to get rid of the sin.
θ = Arcsine(0.6) = 36.86º (arcsine is the inverse sine)
The title should be "What sine is used for" instead of "What is the sine function".
I am not a mathematician but I tried to figure out what sine means. It is a property (a constant characteristic, or the nature) of a right angle triangle. In particular it is a property of the opposite and the hypotenuse. So as the hypotenuse is extended (made longer) the length of the opposite will increase at a fixed rate. Sine shows the rate of change. So for example if the the sine is 1/2 (or 0.5) then every time you double the length of the hypotenuse, the opposite will increase by half as much. This was just an example; I do not know if there is any actual triangle that has those results. In short, the sine tells you the rate of change between the opposite and the hypotenuse as either one of them is increased in length.
The above was calculated using the opposite and hypotenuse. Calculators however can calculate the sine ratio from the angle, just type the angle in degrees, press sine and it will give you the ratio. (I do not know what formula the calculator is using to perform the calculation though).
As another example, you have two people trying to reach the same point on a map. One person walks from their start position straight to the desired meeting point; another person starts from a different point (but 90 deg from the other person) and has to walk at diagonal to the meeting point (just like an opposite and a hypotenuse). The sine tells you how much longer the hypotenuse-walking person has to walk. For example if the sine is 0.75, the hypotenuse-walking person walks 75 units out of 100 units; the other person only walk 25 units of 100 units.
Mathematicians on here if you could confirm my understanding is correct or not.
Great analysis .... Thank you I was looking what sine , cosine tangent .... Your analysis is great . Are you on twitter ? I want to follow you
@@rajibdhungana Hello Rajib, thanks for your reply! No I don't have Twitter. Maybe I should get one. I'm glad you liked my comment. Lately I've found math very interesting.
U seem to have exactly explained what sine is..that it's a ratio, which gives the incremental of one variable vis a vis the other.
This type of fundamental approach is required by young students who aimlessly and senselessly tend to mug up in order to score marks.
@@suryas6429 I'm honoured you read my comment, and I'm glad to hear I got the principle correct. I find when math is thought through in such a way it becomes quite interesting.
@@rajibdhungana I'm sorry for the late reply. I don't have twitter. Maybe I will try to make some math videos in the future (despite not being a mathematician).
I *love* that this video is exactly 3:14 minutes long
haha i get it
Ok... So what exactly it means? Ratio it seems to me... But does it have anything to do with the measurement of the reference angle?
Though I had a very clear idea about this.......I wanted to hear your non-memorising explaination.
This is the elaboration of the idea I wanted to post on youtube.
Thank u very much...i was vrery confused with sin teta...now its time to see what a cos theta is...thank u very muchh...love u
0:47 what is theta😰
Great information conveyance!
Like
First vid i have seen. I hope the ‘dont memorise’ mantra is literal and the channel teaches ‘how’ to learn and not ‘what’ to learn.
I will investigate further:)
AWESOME VIDEO😀😀😀😀
Whenever I learnt from this channel , i remember that very clearly
Could you tell me why trignometry is based on right triangle
Hi Nikhil, let me ask you a few questions! When you are standing, what's the angle between your feet and your floor? At what angles are the walls of your house placed with respect to the floor? At what angle is your building with respect to the ground? Do these questions answer your question?
awsome, the quality of studies one get in this era is simply awsome. in our time the techology was not so robust, simple, economic and convenient to use. now anyone can get the clear and accurate answer for their quary quickly. hats off to the potential of youtube world and their channels.
Actually any geometric figure can be broken into right angled triangle. It can be square,rectangle, rhombus and a triangle also.
MANIT ROY not a circle tho
Two diameters or radii at right angles.
So helpful! Thanks!
K but what is that value 0.6 where it use . What is the application of this ?
Yeah thats my question plz anybody tell?
The video is very well explained, but I couldnt understand what "Theta" is? Anyone care to explain pls?
theta means whatever the reference angle is. if you have a triangle and there's a triangle that the question you're given is refering to, they'll mark it as ∅ (theta). hope this helps
Because of them I got scammed by a robot, saying I got an Iphone, well they didn't take my money, which was a relief!
Thank you so much 🙏🙏
tysm this saved me！！！
You teach in really awesome way👍
Best explanation...!
Thnaks a lot, Nirbhay!
We are glad you like our videos.
Keep watching! 😃😃
when I insert in any calculater "sin(n)" where n is any number
I get a direct ANSWER! without the calulater knowing any value of opp and hyp
I would really love to know why is the calculater gives it directly and the most important is why in the world they needed these trig-functions in the first place
love your chanel
Is that are coming 2*Pi?
If yes, that is not the sine, it is the period of the function
Because in trigonometry there is a table.sin 0°=0,sin 45°=1/√2,sin 30°=1/2,sin 60°=√3/2,sin 90°=1.
the function of sine is actually pretty difficult since it has a part with every exponent there is.
if u see a graph it looks like a repeating wave.
The sine and cosine functions can be defined in terms of their Taylor Series
To answer the original question, because sine is a *ratio of* two sides on a *right triangle,* any specific angle represents a specific shape of triangle and the actual size of the triangle doesn't matter because the lengths cancel each other out. E.g. for a 3-4-5 (as shown in video) or 6-8-10 triangle, the sine is 0.6 for both.
Thanks for the explanation I was facing much problem in light ch , But now it's solved 🙏🌼🌸🙏
Mam but why sin theta is equal to opposite/hypotenuse
why won`t anybody give a strait answer to the guy who wants to know what .6 really means? how does the ratio of .6 equate to an angle?
And that is exactly what keeps them the most confusing functions in the history of human.
Straight answer: .6 is merely 60% of the overall length of the hypotenuse. Just like the cosine (4/5 = .8) is 80% of the overall length of the hypotenuse. It is not directly related to the angle itself. The statement "the sine of theta (angle)" is the mathematical way of saying "the side opposite of the angle". The statement "the cosine of theta (angle)" is the mathematical way of saying "the side adjacent to the angle". The ratio is pertaining to the hypotenuse, not the angle. Hope that helps.
very good, many thanks!!!
Just remember SOH CAH TOA.
I was taught the mnemonic Some Old Hens Cackle And Hackle Till Old Age which I find better than Soh Cah Toa
Some Old Hippie Caught Another Hippie Tripping On Acid
It's also called OSH ACH OTA
Or just OSHACHOTA 👍
Some Old Hags
Can’t Always Hack
Their Old Age
Socks On Hands Can't Avoid Having Toe Ooze Attack
That was my first lacture and I learn it tnx for that
Wowww sprr explanation plzz we want like this some videos sis
Thank you so much for your appreciation. We will try our best to make more video content. In the meanwhile, you can check our entire library of content on dontmemorise.com/
U guys are amazing 😍😭
Thank you so much for your appreciation. We are glad that you understood the concept. You motivate us to do better. Keep watching our videos : )
Actually sinx=x - x^3/3! + x^5/5! - x^7/7! +.........
Where x=angel(in radian)
Yeah it is obtained from Taylor series
Very nicely explained. Thanks. PSD.
You're welcome! Happy Learning :)
Fantastic 😃😃😃😉😉😉👍👍👍👌👌👌
If u hear an Indian voice means it’s legit
Maths. Sign. Prosperity. Abundance.
The video is 3mins and 14seceond
π=3.14
There are no mistakes!!
Nice video👍
Thanks for the visit and for your appreciation. We are glad that you understood the concept. For more videos, please visit our website - dontmemorise.com/
Bruh, you think if we don't memorise, we won't forget!
I have a question:
I know that the sine and cosine are pecents of the hypotenuse
But if so, the how can a answer be negative ?
Because this video is awful. Sine and Cosine are much more than side of a triangle. There many better videos. Math and science has a good video on it.
What does the 0.6 units mean? It can't be the length of any side because we all ready have that. It can't be the size of the angle because we all ready know that. What does that "0.6" represent?
Joseph Nardone it is just the ratio of the opposit/hypotinus, nothing really that you see, ratio is the perfect word to describe it
Ratio of side
Theta is 37°
0.6 is just a ratio. The ratio is a just the starting point for calculations.For example, If you know the ratio is 0.6 then if the hypotenuse is 100 feet long you know that the length of the opposite side of the triangle is 60 feet. Or, if you know the distance from home plate to second base is 150 feet, then you know that to steal second the runner on first has to sprint 90 feet before the catcher can throw the ball 150 feet.
Thanks mam 🙏🙏
You're most welcome. We are glad that you understood the concept. We are happy that we could help you learn.For more videos, please visit our website - dontmemorise.com/
Why we are writing always sin(x) = Opposite side/ Hypotenuse.??
Similarly for cosine and tan functions.?
because the sine function is defined as the ratio of the opposite side to the hypotenuse in a right angled triangle. In other words thats what sinx actually means and nothing else, its just a function
@rajkumar Rj It's a convention
It just like asking why "6^2 " equals to " 6x6"
@@imrsk Civil Engineering and stuff
@@imrsk Well Trigonometry is just used to make things easier u know make calculations easier. It is just a tool. Let's say u r doing some geometry problem and u know trigonometry than u can make some constructions and simplify ur calculations. It's just like using the quadratic formula instead of factorising an equation like x^2 - 7x +11. Try doing it both the ways good luck.
Hey there the value of theta becomes 0.6unit what is it? Where to use it!?
everyone: okie okie, got it.
meh(a 11yr old, tryna learn trignomentry): damn ez, me in my mind - oh gosh, im ded
@@karaccs0524 I learned square roots, squares, algebra now. I'm ready to learn trigonometry :)
I know that. I shud revise it
to find the hypothenuse -
opposite^2 + adjacent^2 = hypothenuse^2
so the square root of the hypotenuse is the answer I guess
Sin is just a name as they said, theta (that symbol) is the angle. Sin, cos and tan are just ratio of 2 sides of triangle
Technically*
So nice way to explanation ! Thanking you,
You explain the concept pretty well, but can you tell where exactly do we use these functions in real life? For a Marketeer, Lawyer, Doctor, Data Analyst, Accountant etc..? I'm just curious to know..
I use cosine and sine to program elliptical orbits of Kepler bodies (planets, stars and so on) in 3D space. Also use cosine to program gerstner waves for oceans. There many use cases and this video is awful just like school system as sine and cosine are so much more than sides of a triangle.
In "Real Life" here on Earth I use cosine and sine to help calculate the True Vertical Depth and offset in offshore well drilling. TVD is required for hydrostatic pressure calculations. Offset and azimuth desired "among other things" to avoid crashing into other oil and gas wells. Hope that helps 😜
Crystal clear explanation 😍😍😍thanks a lot ....
Absolutely good class
Why do we write sin rather than sine???
Could anyone tell why sin theta is opposite by hypotenuse
I'm wondering the same fr
Can you please tell me which software you are using for animation?
Very good
If this is your definition of sin function, how can you explain that you can calculate sin270? Or any angle above 180 degrees?
Like what do u find from it
The most logical explanation i have ever seen...
We're humbled to hear that! Thank you :)
Well presented. A polite, humble, gentle suggestion: phonetically, hypotenuse is hypoteNEWS.
I have one question can u solve. Tan(thita/2)=1.13 root 30x30-20 can u tell me how can solve this this is for round to square
I dont know shit about math i was just programing and i got the curiosity of wtf is a sin and cos so now im determined to know lol
The video is awesome but the amplitude of this video is very low.
I like your video.... Can you please tell me why sine is equal to opposite side by hypotenuse only
Actually there are 6 such functions
Sine(sin) cosine(cos) tangent(tan) cosecant(cosec) secant(sec) and cotangent(cot)
These functions are the different ratios of the sides.
So
Sin = opp/hyp
Cos = adj/hyp
Tan = opp/adj
Cosec = hyp/opp
Sec = hyp/adj
Cot = adj/opp
This video only explains the sine(sin) function
How solve this equation? 3cos5x-4sin5x=3. Senegalese l am thanks you!
divide by 5 on both side the form sin(x+37degree)
But what is the sine good for? What it really is? You've just showed us how to get the sine value.
length of this video is pi.
Who are all from chaitanya school ✋
thanks,🙂👍
You're welcome! Happy Learning :)
I want to know .. what does 0.6 mean in that triangle.. Can anyone explain?
since the length in cm of the opposite side is 3, and the hypotenuse is 5.....so sin theta will be equal to opp/hyp, in this case 3/5....by calculating further to bring it to decimals, it becomes 0.6......ik its late but i still wanted to explain. Feels good.
Sine can be defined by unit circle easily...
these series helped me a lot.
Thanks for sharing :)
0.6=?
Does 0.6 here the angle Teeta? What is 0.6 we got there? What is the use of 0.6 ? Does anyone please tell me
Well in this case it has no use
This is just an example
The actual uses of sine and others is in getting an angle or finding a side in a much more complicated case
@@alkamishra9974 Thanks for your response 😀
Very good explanation
Tell some thing about sine angles
U R best u have given best name Dont memorize
Thank u very much for the appreciation and for watching. :)
Why does sine always equal to perpendiculer/hypotenuse?
you should know your SOHCAHTOA methods
Its a definition
It's not a definition.
It's rather the other way round.
The ratio of perpendicular and hypotenuse is named as sine.
If it's a reversed ratio, then it's called cosec
what does 0.6 in sin of theta references to?
im trying to figure out the same thing and i cant find the answer anywhere, what part of that triangle is 0.6???
but what is 3/5.. when to use? what if value of theta is given.. what will be the meaning to 3/5 and value of theta?
what part of the triangle is o.6?
Cosine theta plz.
Thank you so much
People from narayana or chaitina
👇
👇
👇
👇
👇
wonderful
You didn't finish the question! Sin
.6 is what in degrees?
It's just a number no unit as it is just a ratio
thanku
Like integration calculus,defferention calculus
Hi Soma, we've started working on Calculus content and our first set of videos will be out in the first half of July.
Stay subscribe to our TH-cam channel to stay updated: bit.ly/DontMemoriseTH-cam :)
Why we should take sin=opp/hyp
It's like saying why we should take a*4=a+a+a+a
Its just a symbol
Very good teachings
What almost every single explanation of these functions fail to answer is why do we need them?
It's like asking why will we use multiplication when we are first learning
Coz this makes things easier
first time studied trigeometry
Dear Teacher what is the importance of trigonometry ?
We will upload videos regarding your question on our website soon :)
because trigonometry makes geometry easy.just like Cartesian coordinate system.
I love the masterful reduction to simple elements you make which provide brain-balm to those who are nervous of maths because of its complex abstraction.