Trig Identities
ฝัง
- เผยแพร่เมื่อ 20 ก.ย. 2024
- This trigonometry video tutorial discusses common trig identities and formulas such as the pythagorean identites, reciprocal identites, quotient identities, even odd identities, cofunction identities, double angle formulas, half angle formulas, sum and difference identities, power reducing formlas, product to sum identities, and sum to product identities.
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Trigonometry - Basic Introduction: • Trigonometry
Introduction to Angles: • Introduction to Angles
Radians and Degrees: • Radians and Degrees
What Exactly Is a Radian? • Trigonometry - What Ex...
Coterminal Angles: • Coterminal Angles In R...
Decimal Degrees to DMS: • Decimal Degrees to DMS...
Arc Length of a Circle and Sector Area: • Arc Length of a Circle...
Linear Speed and Angular Velocity: • Linear Speed and Angul...
Clock to Angle Problems: • Clock Aptitude Reasoni...
The Unit Circle: • The Unit Circle, Basic...
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Reference Angles: • How To Find The Refere...
The Six Trigonometric Functions: • The Six Trigonometric ...
How To Solve Right Triangles: • Trigonometry - How To ...
Reciprocal Identities: • Reciprocal Identities ...
Quotient Identities: • Quotient Identities - ...
Even and Odd Trigonometric Identities: • Even and Odd Trigonome...
Pythagorean Identities: • Pythagorean Identities...
Trig Functions - Periodic Properties: • How To Evaluate Trigon...
Trigonometry For Beginners: • Trigonometry For Begin...
The Exact Value of Trig Functions: • How To Find The Exact ...
Special Right Triangles - 30 60 90: • Special Right Triangle...
Special Right Triangles - 45 45 90: • Special Right Triangle...
Cofunction Identities: • Cofunction Identities ...
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Angle of Elevation Problems: • Angle of Elevation and...
Evaluating Trig Functions Given a Point: • Evaluating Trigonometr...
Exact Value of 5 Remaining Trig Functions: • How To Find The Exact ...
Evaluate Trig Functions - Reference Angles: • How To Use Reference A...
How To Graph Trig Functions: • Graphing Trigonometric...
How To Graph Sine and Cosine: • How To Graph Trigonome...
Evaluating Inverse Trig Functions: • Evaluating Inverse Tri...
Finding The Missing Side of a Triangle: • How To Calculate The M...
Finding The Missing Angle of a Triangle: • How To Calculate The M...
Two Triangle Trigonometry Problems: • How To Solve Two Trian...
Bearings Vs Direction - Word Problems: • Bearings vs Direction ...
Two Triangle Problems - More Examples: • Trigonometry - How To ...
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Verifying Trig Identities: • Verifying Trigonometri...
Trigonometry Final Exam Review: • Trigonometry Final Exa...
Trigonometry Formula Sheet: bit.ly/47diggI
Trigonometry For Beginners: th-cam.com/video/PUB0TaZ7bhA/w-d-xo.html
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I'm actually cooked bro
LMFAOAO FR
bro same oml
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real?? trig was so easy until I got hit by this truckload
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@@inspirationalroseswashere..bro what is hard about this i love simplifying tri equations with idenities 😋
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Bro teaches physics, algebra, chemistry, trig, basics of math, matrices, calculus, etc. What does this man can't do in the field of math?
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Fought the whole semester to keep my A, this is what's going to blow it for me. This stuff makes absolutely zero sense without a reference sheet or something.
Hit them flash cards
couldnt be even more perfect, literally learned about trig identities in class today and didnt understand it. immaculate timing
bro this trig stuff is so fukin hard
@@tufasteel2329 I swear it’s making me lose hope I can only do math if I get the logic but what’s the logic here…
@@Askechad same my other classmates do it so fast and I’m here trying
Memorize this bc I’m in college and having to come back to review this because I forgot most of them
@@whyhaydenDo not ever memorize, it's better to understand
Bro literally my teacher only talks about donkeys in class. I mean literal donkeys. And yet I’m supposed to know this? This man has SAVED me
@nomant7 yeah they should enlighten us
Donkey A and Donkey B are walking toward each other on a dirt road. Donkey A starts from the barn, 15 miles away from the meeting point, at 1:00 PM. Donkey B starts from the orchard, 10 miles away from the meeting point, at the same time, 1:00 PM. Donkey A walks at a speed of 3 miles per hour, while Donkey B walks at a speed of 2 miles per hour. At what time will Donkey A and Donkey B collide?
@@wege8409 To determine the time when Donkey A and Donkey B collide, we can use the formula:
\[
\text{Time} = \frac{\text{Distance}}{\text{Combined Speed}}
\]
### Step 1: Calculate the combined speed
- Donkey A's speed: 3 miles per hour
- Donkey B's speed: 2 miles per hour
- Combined speed: \( 3 \text{ miles per hour} + 2 \text{ miles per hour} = 5 \text{ miles per hour} \)
### Step 2: Calculate the total distance between them
- Donkey A starts 15 miles away from the meeting point.
- Donkey B starts 10 miles away from the meeting point.
- Total distance: \( 15 \text{ miles} + 10 \text{ miles} = 25 \text{ miles} \)
### Step 3: Calculate the time it takes for them to collide
\[
\text{Time} = \frac{25 \text{ miles}}{5 \text{ miles per hour}} = 5 \text{ hours}
\]
### Step 4: Determine the collision time
Since they both start at 1:00 PM, they will collide 5 hours later:
\[
1:00 \text{ PM} + 5 \text{ hours} = 6:00 \text{ PM}
\]
So, Donkey A and Donkey B will collide at **6:00 PM**.
@@wege8409 Let's break this down step by step:
1. Donkey A starts 15 miles away from the meeting point and walks at 3 miles per hour. To find the time it takes for Donkey A to reach the meeting point, divide the distance by the speed:
15 miles / 3 miles per hour = 5 hours
1. Donkey B starts 10 miles away from the meeting point and walks at 2 miles per hour. To find the time it takes for Donkey B to reach the meeting point, divide the distance by the speed:
10 miles / 2 miles per hour = 5 hours
1. Since both donkeys start at the same time (1:00 PM) and take the same amount of time to reach the meeting point (5 hours), they will collide at:
1:00 PM + 5 hours = 6:00 PM
So, Donkey A and Donkey B will collide at 6:00 PM.
bruh literally two minutes in and you already gave me the best way to remember sin, cos, and tan. wow ur a legend
Thanks, man. Been cramming right before finals trying to relearn everything, and this channel has been a life saver. Everything is explained so clearly and simply it makes trig seem easy.
30,60,90 and 45,45,90. The good ol' Right triangle basics. Your channel helped me out quite a bit in my trig class.
Thanks!
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This channel is by far my favorite TH-cam channel to learn Math. Thanks for making these videos. I can only imagine the hours and effort you put in.
the timing of this video is actually perfect. I have a test tomorrow and I need to know my trig identities,
I have a trig exam on this exact content tomorrow, big praise.
This video can help you with your Trig final exam:
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thnks i love this chanel@@TheOrganicChemistryTutor
Man may God bless you though I paid a huge sum of tuition fee the whole year you're gonna save my exam a month ago
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Y'all pray I get an A*
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I studied all this with great interest while studying in college. But now after 13 years it was very difficult to recollect. So when I go for an interview for the position of a mathematic teacher to answer the trigonometric functions was a difficult task. But this video helped me to remember all the trigonometric functions. It is really helpful for me. Thank you so much.
Bro right after my trig unit just ended. But I got the pre-calc final. Thanks for uploading! You da man. Wish me luck!
This video can help you with your Pre-calculus final exam:
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Though my test was on Monday, your previous video for trig identities helped, I'll make sure to watch this one too
Thank you for uploading educational content every time!❤
No problem
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Thank you so much. You made me to conquered my fears. Thank you so much. You broken a complex maths into parts for my understanding. I appreciate you.
this is actually make me cry
I’ll be dead by Tuesday
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Next year ill be taking calc for my senior year in high school so i decided to put in the hours this summer. i am 8 mins into this video i can feal an increasing pressure in my skull and that's a good thing cause am absorbing the information. But its unreal its all of this is packed into a
You covered just about everything here, nice. Got my final for pre-calc tomorrow
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more helpful than what any teacher has done so far
your voice never changed.
why do you not explain where are these coming from 11:40
thank you for explaining this chapter in a very systematic way, it really helps!
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thank you very much sir
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Stop reading comments and concentrate 😅
the goat
how do u know when to apply a trig identity? is it necessary to apply an identity everytime u see one, or are there times where leaving the trig expression just as it is is better than applying an identity?
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14:07 u can use formula of (a+b)(a-b) =a² - b²
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15:44 I love how you say let me say that again
Your videos are an absolute godsend, but that red dot was soooooooo distracting. 😞
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Broo. This is so complicated, I am basically lost at this point.
I was getting frusterated when he was bout to skip explaining cos20=cos^20-sin^20, then he did, and I was relievedddddd
Very thorough and organized!
I actually needed to watch this video For trigonometric Integrals It's a good review for that and also In polar coordinates
this is already great but would be even better with a visual representation on the unit circle. But thanks for saving my grades tomorrow!
Thank youuuuuu 🥹
I have exams tomorrow by 9am, I'm so happy 😁
If I don’t pass trig this semester…my dad’s gonna shit in my mouth
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This is really amazing, I have my midterm exam today
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I suggest changing the background to more like gray so it is easy on the eyes . Btw appreciate your dedication Man :)
I really needed this. Thank you!!
Fantastic, full packed course from the very basic to the advanced in less than half hour.
Lol Im binge watching every trig derivation vids for my upcoming midterm exam
wow he is still replying and liking comments!!! Can I get a like from Mr. Organic chemistry
no
coscosb = 1/2 [ cos (a+b) + cos (a-b) ]
21:40
Thanks bro I could use this for my calculus 1
Thank you teacher
God bless you
Please avoid using the purple marker. It's extremely difficult to see. Maybe use yellow??❤
Last minute studying for a placement test and I haven’t had math in over a year 👍
It's the first tutorial of your's that I didn't get anything🤒🤒🤒
Whoever thought it was a bright idea to make this stuff a requirement for biology majors needs to arrested.
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'THE EVERYTHING's TUTOR'
I can handle any mathematics up to calc 3, but I still get these trig identities wrong. I have got to figure out a system to really commit these to memory because I should not be having this problem.
i have an ib math external in 1 month and I find the subject hard i need help
i see that organic chemistry goes hard lately
Thank you very much teacher!
absolute king
Exam is today morning... Yeah, I give up bro
Hello 2090.
I was here
Me too
What's the best way to get a tan? Having the Sun (Sine) over the coast (Cos)!
haha... funny
exam tom…I haven’t studied…first exam…no sleep :)
Thanks for your lec❤love it
sin45=cos45=1/root2 not root2/2 , anyways gr8 video
1/root2=root2/2, root2/2 is rationalized
thanks for posting this video i love u sir
Tangent
Thanks!
Thanks a lot for this lesson 😊
how did you get so knowledgeable??
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i’m so cooked on my upcoming test bro
You forgot 1 more trig identity of cos 2θ which was (1 - tan^2 theta)/(1 + tan^2 theta)
lovely explainations. Thank you so much.
nice video,well explained
exam tomorrow and i aint studied once im so done
Pls can u show how to calculate antilog in fx calculator
I think you interchanged the tan and the cot in the beginning on the video, please kindly check.
Will never fail trig again
Mind blowing!!!
Learn the "magic hexagon" It might help you in memorizing a bunch of trig identities! :)