Remembering these further: Sin is fingers below/down because SINners go *down* to hell (a little harsh maybe but it helps remember) Tan: You don't wanna tan your palm so you turn your hand over Cos: well, if you remember Sin being down this one's easy
**FOR SIN/COS 45** This rule works for all exact trig. values INCLUDING sin(45) and cos(45). sin/cos 45 are just exceptions where we need to rationalise the root. eg. sin(45) -> 2 fingers below -> sqrt(2)/2 -> sqrt(2)/2 * sqrt(2)/sqrt(2) -> 1/sqrt(2) If you compare the decimal value of sqrt(2)/2 and 1/sqrt(2), they actually have the same value
I have always had a problem memorizing sin(0)/cos(0) or sin(90)/cos(90) because I ALWAYS get them mixed up by attempting to just memorize them. Thank you so so very much for this. I wish I would have known about it like 15 years ago, but at least I know it now!! Very amazing and very helpful!! Thank you!!
When you have a radical in the denominator, you could just multiply your answer by the radical in the denominator over the radical. One example would be: *tan 30 deg* = 1/sqrt 3 * *sqrt 3/ sqrt 3)*
@@magadzhabraftw6157 this helps me a lot. I was kind of wondering why I got sqrt 30/sqrt 30 on my calcu, but is it okay still to use 1/sqrt 3? They're the same?
Blast ! I've never been a great mathematician but I've discovered this trick by myself ten years ago :-) The sines of the most common and useful angles - 0, 30, 45, 60 and 90 degrees - are the halves of the roots of 0, 1, 2, 3 and 4 :)
Thank u soo much for this helpful video. Tomorrow is my paper and I learnt all this in just some minutes.. I got it late but very helpful.. and once again . Thank u...
This was extremely helpful and I have learnt the trigonometry handtrick for exact values in just over 4 minutes!! Thankyou for this useful and easy video!! :)
Good video, but if you have the little finger at the top to start with as zero degrees.......then you don't have to turn over your hand to measure tan values. Instead, use SINE fingers above, and COSINE fingers below. Much easier to remember for adolescents!
"Handy" little trick...! Trig is very useful in the construction industry, oceanography, navigation, crime investigation, engineering... good stuff to know.
Oh my god osm video I didn't even imagine it will be so easy to remember I was really struggling with these but after watching ur video it became so easy
Remembering these further:
Sin is fingers below/down because SINners go *down* to hell (a little harsh maybe but it helps remember)
Tan: You don't wanna tan your palm so you turn your hand over
Cos: well, if you remember Sin being down this one's easy
thats actually mad helpful, i got mocks tommorow
Can I hug you for this ? You just made it easier for me 😭 thanks !!! I have my mocks tomorrow as well 😂😂💜
Tan so we turn our hand
I think this even more helpful
Thanks this is really helpfull
Awesome. All teachers should teach this method. Hats off
They simply just don't
definitely, just because how simple it is. My bald (yes i had to put emphasis on his baldness) taught us this the most complicated way ever.
i feel like i just found a bucket of gold....THIS IS SO FREAKING HELPFUL THANK YOU
Your grammar though
i know, wtf. It's like a cheat method haha...
I feel like I have got an ocean of gold. 😂😂
@@davidismdumdu where did she go wrong???🙄
Why not just use a calculator?
When it's the night before your first GCSE Maths exam and you still haven't memorised the exact trig values until you found this video :))
LETSTALKLUFC LMAOO
amen
How about sin 45 .. Its 1 per surd 2 ..cant use this rule
i have mine in a week XD
LETSTALKLUFC same one year later
these methods should be used for teaching in school
They are in mine
you're supposed to know how these values correlate to their positions on the relevant graph
U never know some people dont have hands...
Some people have to many fingers
My teacher taught me
**FOR SIN/COS 45**
This rule works for all exact trig. values INCLUDING sin(45) and cos(45).
sin/cos 45 are just exceptions where we need to rationalise the root.
eg. sin(45) -> 2 fingers below -> sqrt(2)/2 -> sqrt(2)/2 * sqrt(2)/sqrt(2) -> 1/sqrt(2)
If you compare the decimal value of sqrt(2)/2 and 1/sqrt(2), they actually have the same value
Sharing this with all my maths students - they love it! Makes this SO MUCH EASIER to remember
my exam is in less than twelve hours but this video has me slaying yesssss
Crazy how the universe follows math like that
Kind of shows how god doesn't exist and everything is just math.
JasonTube wth no it just a hand trick chill
JasonTube or that God does exists and he planned everything perfectly so that I would be able to pass any Maths test
+JasonTube u r mad you are that means you are saying 1+1= o
Math is the language of the universe.
Most teachers would never think of this, well done
most teachers would tell you to look at a graph
I’m actually amazed at this! I’ve struggled with trigonometry for a long time and this has helped me understand!!!
Omg this is so useful! I’ve been struggling to remember these for a long time.😂 thank you so much 😊
You are most welcome!
You’ve genuinely just saved me for my maths gcse tomorrow thank you!
I normally dont comment on anyones video buttt i srslyyy dont know what u teached was amazinggg u r my superhero tysmmmm ♥️♥️♥️♥️
this rule is insane
this rule is insane
I have always had a problem memorizing sin(0)/cos(0) or sin(90)/cos(90) because I ALWAYS get them mixed up by attempting to just memorize them. Thank you so so very much for this. I wish I would have known about it like 15 years ago, but at least I know it now!! Very amazing and very helpful!! Thank you!!
You are most welcome! Glad you found it useful.
omg this actually helps, thank you so much (I have a trig test tomorrow)
When you have a radical in the denominator, you could just multiply your answer by the radical in the denominator over the radical. One example would be:
*tan 30 deg* = 1/sqrt 3 * *sqrt 3/ sqrt 3)*
which simplifies to : *sqrt 3/3*
Thank you very much.
@@magadzhabraftw6157 this helps me a lot. I was kind of wondering why I got sqrt 30/sqrt 30 on my calcu, but is it okay still to use 1/sqrt 3? They're the same?
Best method ever! 😀
honestly this video is a lifesaver!!!
Blast ! I've never been a great mathematician but I've discovered this trick by myself ten years ago :-) The sines of the most common and useful angles - 0, 30, 45, 60 and 90 degrees - are the halves of the roots of 0, 1, 2, 3 and 4 :)
this is the clearest video, thank you so much
Thank you for the positive feedback
you have NO IDEA how much this helped, our teacher just gave us the table and expected us to memorise it!
Thank u soo much for this helpful video. Tomorrow is my paper and I learnt all this in just some minutes.. I got it late but very helpful.. and once again . Thank u...
Thankyou so freaking much you’ve saved my life
That's what we here for. Thank you for watching
Hands down the best thing on the internet. Thank you so much!
Love it. I will use it with my class tomorrow. They have missed out so much due to Covid that every trick helps. Thank you.
All the best!
this is literally the one thing i can never remember but now i will ahhhh!! THANK YOU
saved my gcses thank you!!!!
I admire those who takes time and spread the knowledge around the globe.
WHOLEY CRAP THANK YOU SO MUCH THIS WAS THE BEST AND EASIEST EXPLANATION ON TH-cam!!!!!!
Incredible😮, but what about csc (cosecant), sec(secant), cot (cotangent)? May i ask for ur help? U have the hand trick? Huhu
Itz so gooooood u save me this time. I literally own u this one!!!!!!❤❤❤❤❤
Glad to hear it. Thank you for the comment. Hope you get to check out more of the videos.
I don't know how someone could dislike this video.
Thanks!!
Very thankss for thisss💗🙌🏻
THANK YOU SO MUCH! Really really helpful :))
EDIT: This came up in my GCSE Maths paper today and I was able to complete the question with ease :)
Thank you so much for this!! This is the thing in maths I never remember!,
You are so welcome!
This was extremely helpful and I have learnt the trigonometry handtrick for exact values in just over 4 minutes!! Thankyou for this useful and easy video!! :)
Thank you bless you I have a maths test guys wish me luck hopefully I’m in at least set 2
This gets recommended after my maths exam lmao, lucky for me I knew the values anyway
on behalf of all #gcse2019 students i would like to say THANK YOU SO MUCH
I have a trig test tomorrow and needed this badly lmao. Now I'll never forget it. Life savers👍🏽😂
Glad it was helpful! Good luck tomorrow!
Sin b
Tan b
Cos b
Bill Cos b !
i don't know why i laughed
Bill Cos b sin ;)
Omg do they teach that at school
😂😂
haha
Thanks for a really detailed explanation :D especially the simulation of fingers and the formula well written in the video!
Good video, but if you have the little finger at the top to start with as zero degrees.......then you don't have to turn over your hand to measure tan values. Instead, use SINE fingers above, and COSINE fingers below. Much easier to remember for adolescents!
I watched other videos using this method and I didnt understand anything however, now after watching yours I feel a lot more confident
"Handy" little trick...! Trig is very useful in the construction industry, oceanography, navigation, crime investigation, engineering...
good stuff to know.
This is _hands down_ the best method. Thanks!
Most welcome!!
Dude I have my paper 1 gcse tomorrow and this has just saved my life. You are god
thanks this is great!
Thank you for the easy hand trick. But isn't Tan 30 = ^3/3 ?
Out of the world ...!!!!!Hats off yr u saved me😀😀😀😀
This just saved my life!!
The best. Pls more videos on proving the Pythagorean and complementary identities. Hoping for the best !!!!!
I'm an engineering student and this is by far one of the best videos i've ever found
THIS IS SO HELPFUL!!! Memory quizzes here I come!
0,30,45,60,90
Sin
rootx/2
x=numb finger under
Cos
rootx/2
x= numb finger above
Tan
Flip hand
roota/rootb
a= fingers above
b=fingers below
This Video is fantastic!
I can't believe how complex my unit made this out to be, thank you!
It helped me so much, we're having our MTAP this coming Thursday and it will be a really big contribution for answering. Thank you so much
super helpful, thanks
THANK YOU
You're so welcome!
OMG I'm Shooked! haha Thank You So Much!
This video is a blessing.
Thank you. I needed to go over this before my math exam tomorrow.
Wish i knew this 5 years ago, FANTASTIC VIDEO :D
But for sin (45), there are 2 fingers on the left / sqrt (2), which is sqrt(2)/sqrt(2) ???
Best trick ....
GCSE maths this morning! Thanks for this
mind=blown. Thank you so much! You have no idea how much this has helped!
This is the best thing ive ever seen
This is one of the most helpful videos i've ever watched thank you so much
this is actually life changing
This is so helpful thank you
Nice way, love from India
this is amazing, thank you!
very nice can you make one more vedio of the value of sec ,cosec and co tan please
The most fantastic video ever!!!!! :D
thank you so much for this
Really very helpful........thanks a lot
Is there any other for solving trignometrical sums using identities
Thank you so much :))
Happy to help!
Thank you. This will help me a lot in AP Calculus.
wtf this is saving my life
Lovely thank you so much god bless you
Thank you! You saved my life
This is a really nice trick for remembering the whole table of trigonometric ratios for specific angles in just one hand! This is really helpful.....!
Oh my god osm video I didn't even imagine it will be so easy to remember I was really struggling with these but after watching ur video it became so easy
Thank you very much. I am taking this class in Summer and this video has helped me a lot. Can you upload for Radians too?
Im in tears😂 thankyou soooooo much i finally get it😂
0:26 why are the hands backwards???
Can u pls make a video for cosec, sec, cot
Where has this video been for all of my four years of learning Math?
woeeeeeeeeeeeeeeeeeeee......................................great ..its makes mathematics to music world......salute
This is pretty intuitive with a great explanation. Thanks!
I take it all back this didn't work at all xd
thank you very much for this hand trick👌👌👌, this will help me a lot 👍👍👍
Glad to hear it!
THIS IS GODSEND
THIS IS SO HELPFUL OMG
Glad it was helpful!
I was so done with cramming these....
You just made my day ❤️❤️🙌
So happy to hear that ❤️
This helps so much omg.
Very helpful before exam time and I wish all teachers try to teach like this
that's actually so helpful