Question

Rewrite with only sin x and cos x.

cos 2x - sin x

Answer 1

\[\cos (2x) - \sin x\]
Use
\[\cos(2x)=1-2\sin^2(x)\]

Answer 2

andthen what?

Answer 3

these are my answer choices


a) cos2x - sin2x - sin x

b) cos2x - sin3x

c) cos2x + sin2x + sin x

d)cos2x - 3 sin x

Answer 4

b