Question

Rewrite with only sin x and cos x.

sin 2x - cos x

Answer 1

sin2x = 2sinxcosx

Answer 2

I'm still extremely lost....

Answer 3

\[\sin(2x) = 2\sin(x)\cos(x)\]
\[\sin(2x) - \cos(x)\rightarrow 2\sin(x)\cos(x) - \cos(x)\]

Answer 4

2 sin x cos^2x ?

Answer 5

That is a minus sign, that should be your final answer. That I gave.