Exact Trig Values - Hand Trick | Trigonometry | Maths | FuseSchool
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- čas přidán 11. 03. 2017
- Exact Trig Values - Hand Trick | Trigonometry | Maths | FuseSchool
There are some key angles that have exact values in trigonometry. The ones we need to know are 0, 30, 45, 60 and 90.
In this video, we will discover one method to remember what these values are: by counting fingers on our hand!
In the first part we explored a different method, constructing a table, which you may prefer. Choose whichever method works best for you.
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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
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?
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!
Thanks for a really detailed explanation :D especially the simulation of fingers and the formula well written in the video!
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!! :)
Best method ever! 😀
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.
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
omg this actually helps, thank you so much (I have a trig test tomorrow)
thanks this is great!
The best. Pls more videos on proving the Pythagorean and complementary identities. Hoping for the best !!!!!
this is literally the one thing i can never remember but now i will ahhhh!! THANK YOU
I was given a sheet by my teacher and trying to memorise the values I felt that I was at a complete loss. I thank you so much!
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.....!
Hands down the best thing on the internet. Thank you so much!
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?
Thanks a lot. Its been realy helpful
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 :)
OMG I'm Shooked! haha Thank You So Much!
This is so helpful thank you
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 :)
mind=blown. Thank you so much! You have no idea how much this has helped!
This is great! Very easy also!
It"s very useful . Thanks for ur wonderful teaching.
Thank you so much for this video it made this so easy for me to understand and I’m confident about my upcoming math quiz now very helpful
This is one of the most helpful videos i've ever watched thank you so much
honestly this video is a lifesaver!!!
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 Video is fantastic!
this is amazing, thank you!
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...
So useful! Thank you so much !
Its really very helful tq
very helpfull and innovative and easy to remember thank u so much
WHOLEY CRAP THANK YOU SO MUCH THIS WAS THE BEST AND EASIEST EXPLANATION ON CZcams!!!!!!
thank you so much for this
Literally 2 hours to my maths exam and I only just learned this.
Feeling pretty confident :)
Thank you so much for this!! This is the thing in maths I never remember!,
You are so welcome!
you have NO IDEA how much this helped, our teacher just gave us the table and expected us to memorise it!
Great method, really useful!
I watched other videos using this method and I didnt understand anything however, now after watching yours I feel a lot more confident
this is amazing and so easy to remember thank you so much
Very helpful before exam time and I wish all teachers try to teach like this
super helpful, thanks
Thank you. I needed to go over this before my math exam tomorrow.
I admire those who takes time and spread the knowledge around the globe.
thanks that was great!!
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?
this was super helpful!!
This is super helpful. Thank you
Awesome ....
This is helps me a lot, thank you 💕
Thank you. This will help me a lot in AP Calculus.
Thank you very much!
Thankyou for this great trick to remember
I can't believe how complex my unit made this out to be, thank you!
This gets recommended after my maths exam lmao, lucky for me I knew the values anyway
This is amazing !!!
Thx soo much !!!
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!
THIS IS AMAHZING THANKYOU
I don't know how someone could dislike this video.
Thanks!!
THIS IS SO HELPFUL!!! Memory quizzes here I come!
Cheers. Very very helpful
This is pretty intuitive with a great explanation. Thanks!
I take it all back this didn't work at all xd
Fabulous trick ........helped me a lot
Wish i knew this 5 years ago, FANTASTIC VIDEO :D
this is brilliant !!omg
Thanks for uploading
Love this
Easy to solve
Trigonometry
Thanx
Love you
The most fantastic video ever!!!!! :D
yoo thannk you so much you just made me pass my test !
This helps so much omg.
This is great!
Such the effective way to memorise them🥺❤️👍🏻
Out of the world ...!!!!!Hats off yr u saved me😀😀😀😀
GREAT VIDEO ......NOW I KNOW ALL THE VALUES.......THANKS A TONNE!💚💚💙💙💜💜😀😀😁😄😊
thanks! really helps
hats off for your channel
Awsome its my ever problem which now this video sort out thanx
Very very interesting and easy thank you verrrrrry much. You make it easy for me......🌺💓🌺💓🌺💓
Thank you so much!!!
Lovely thank you so much god bless you
awesome !!
that's actually so helpful
This helps me a lot thank youuuu😘
It is really nice i have understood everything and thank-you for it is very nice
Wow 🤠 this is such a helpful trick ... I'm still mesmerised that is was this easy 😄
"Handy" little trick...! Trig is very useful in the construction industry, oceanography, navigation, crime investigation, engineering...
good stuff to know.
thanku so much this helped me out a lot