Question

if cos x + cos^2 x=1,
prove that sin^2 x +sin^4 x=1

Answer 1

heya,,,

it's too easy ...

Cosx+cos^2x=1

cosx=1-cos^2x
.
=)cosx=sin^2x ------1)

according to 1) .

sin^4x=cos^2x-----2)

so,,according to 1) and 2)

we can say that .

sin^2x+sin^4x=1.

hope it help you
@rajukumar ☺

Answer 2

i hope it will help u....