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anonymous one year ago Check my answer. Rewrite with only sin x and cos x. sin 2x - cos x.

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1. anonymous

$2 sinx cosx -cosx$ $\cos x(2sinx-1)$ correct?

2. anonymous

Choices: A. 2 sin x cos2x B. sin x C. cos x (2 sin x - 1) D. 2 sin x

3. freckles

yes right sin(2x)=2sin(x)cos(x) 2sin(x)cos(x)-cos(x) both terms have common factor cos(x) cos(x)[2sin(x)-1]

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