Trigonometry is wasy

#shorts #bprp #fast

[Aiden-xnwo]

This leads to the interesting fact that:
sin^4(x)-cos^4(x)=sin^2(x)-cos^2(x), since sin^2(x)+cos^2(x)=1.

[ChaineYTXF]

I'll be damned ... even doing it wrong produces the correct result..

[davidbrisbane]

Trigonometry is easly when you are given easy questions 😀.

[bobhydro]

This is the sort of math you make up when testing

[DivoomOfficial]

dam i didint know that trigonometry is Wasy

[prometheus]

Well this also happens to be cos(2x), so there's that. Also denominator is 1, which leads to an interesting result of cos^4 x - sin^4 x = cos(2x).

[vprithviraj]

My last 2 brain cells after seeing this: aight i'mma head out.

[repulse_wkey]

My guy really simplified while he had - and + in between

[soniyabharti]

😂 that's the good one . Watching you're way of solving , killed me inside . But answer is correct 😅somehow

[CallMeXofer]

Show this to your math teacher and see what happens 💀💀☠️

[nikhilnagaria]

works for (x^4 - y^4)/(x^2+y^2) as well!

[sathibanerjee]

this doesn't even require trigonometry :P

[Pianissimo]

It was not trigo, it was algebra
X²-Y²=(x+y)(x-y)

[neologicalgamer]

This is the most cursed thing I've seen in my entire life

[knightfade]

I love these type of stuffs. I always like stuffs which try to play with our minds and make our assumptions shuffle. But this one isn't even close need more which will actually left us in doubt.

[ryo_sannn]

Can you actually cancel that? I thought that it isn't possible because both terms in the nume and deno are separated by a sign.

[jutechguy]

pardon me, but I think it can be simplified further to -cos(2x), please correct me if I´m wrong.

[jacplanespotting]

but, with a short, you have a 59 sec time limit....

[pokeblade]

=Sin⁴-cos⁴/sin²+cos²
{a²-b²=(a+b) (a-b)
=On cancelling sin²+cos² from both numerator and denominator.
We have,
=Sin²-cos²
=Sin²-(1-sin²) {sin²+cos²=1}
=sin²-1+sin² {cos²=1-sin²}
=2sin²-1→answer
My secret step:
2sin²x-1=0
2sin²x=1
Sin²x=1/2
√Sin²x=√1/√2
Sinx=1/√2
Sinx=sin 45 {sin 45=1/√2}
X=45 degree
😊

[KakashiHatake.sensei]

Cut that sin and cos with 2*x^2 left 😂😂