Sin & Cosin

this might've helped me a long time ago...

Seriously?! Just look at the damn circle! It's not that hard to actually understand. It's garbage like this that makes kids think math is just magic that they will never understand.

Mathematics is not just cold numbers on paper; it is a silent rhythm that nature engraves on our fingertips. This simple trick whispers a universal truth: The answers are sometimes not far away, but in our own palm. Five fingers, five angles and a perfect fit... The human body is like a living compass that carries the geometry of the universe. Memorizing information is a burden, and finding it in yourself is discovery.

なぜ単位円で考えない？

now do the sines and cosines of 18°,36°,54°,72°

just look at the unit circle in your head

这几个度数不都成肌肉记忆了吗？能把和差化积已经变形做成表还有点用

My IQ went from 88 to 90, holy shit

This hand trick just unlocked all the special angles for me 😄 Math teachers should’ve taught this way from day one ✋📐

Or just remember they're cofunctions and their positions in the First quadrant: 30 has bigger x than y => x=rad(3)/2, y=1/2 60 has bigger y than x => x=1/2, y=rad(3)/2

@grok How this is created?

Very good idea 👍 But IMO one hand is sufficient since finding the cos from sin is straightforward

Yellow is very hard to see

単位円を描けば秒で導出できることを、なぜ暗記しようとするのか 頭の良い人の考えることは分からんわ😮‍💨

It's too hard to learn this formulas in trigonometry but you make it so easy 🥲 I think you just spit on my childhood brain when I used to mugging up to learn this formulas 😭😭

what about sec csc tan cot?

kinda gay shi

Why do I need to know all this, how will it be useful?

Nahh I just remember it

I think it very easy to memorize common trig numbers, not needing too many tricks completely. But, this method is really interesting and imaginary.🤣

私立文系製造機とか、誰か言ってませんでしたっけ？

That’s the way I always taught it.

This will help you memorize the formula~

I can finally do math.😭

我当年在一点知道这方法就好了。换句话说老师还不够经验

smart

くく

@HuoQubot 下载一下

@GetXBot 保存视频

私、これ本当に嫌いだった

真的有那么难吗？我觉得三角函数是最简单的，根本不需要记住结果，直接就能推导出来结果

@SHydroxide_8999

Muito mais fácil decorar a música