studyrankersonline.com/99304/rewrite-with-only-sin-x-and-cos-x-sin-2x-cos-2x

Rewrite with only sin x and cos x. (1 point)
sin 2x – cos 2x

a) 2 sinx cosx – 1 + 2 sin2x
b) 2 sin x cos2x – 1 + 2 sin2x
c) 2 sin x cos2x – sin x + 1 – 2 sin2x
d) 2 sin x cos2x – 1 – 2 sin2x

Answer :

b) 2 sin x cos2x – 1 + 2 sin2x