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anonymous
 one year ago
cos(pi/2x)=sin(x)
True or False
anonymous
 one year ago
cos(pi/2x)=sin(x) True or False

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0false, doesn't work out

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1\(\cos(AB) = \cos(A)\cos(B)+\sin(A)\sin(B)\) So in fact \(\cos(\dfrac{\pi}{2}x)=\cos(\dfrac{\pi}{2})\cos(x)+\sin(\dfrac{\pi}{2})\sin(x)=0*\cos(x)+1*\sin(x)=\sin(x)\)

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1@plohrb @Dwayne_Johnson This is the problem with just giving answers...

freckles
 one year ago
Best ResponseYou've already chosen the best response.1this is also cofunction identity compare cos(pix) 's ratio and sin(x)'s ratio dw:1441062161511:dw

dinamix
 one year ago
Best ResponseYou've already chosen the best response.1@Reid448 its true and we find it in (Equilateral triangle ,Trianglebased) right mr @freckles

freckles
 one year ago
Best ResponseYou've already chosen the best response.1equilateral triangle is a triangle with each of its angle measurements equal to 60 deg

dinamix
 one year ago
Best ResponseYou've already chosen the best response.1i mean should be based and equilateral

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1thanks @freckles that is cool, I always have to look it up.
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