# Establish the identity 1-2 sin?o coso-2 sin o= cos (20) Choose the sequence of steps below…

Establish the identity 1-2 sin?o coso-2 sin o= cos (20) Choose the sequence of steps below that verifies the identity. O A. 1-2 sin cos 20-2 sin “e= (cos20-sine)(12 sin 2e) = 1.cOS (20) = COS (20) OB. 1-2 sin 2ecos 20-2 sin “e= (cos20-sine) (1-2 sin 2e) = 1. cos (20) = cos (20) OC. 1-2 sin 2ecos 20-2 sin “e = (cos 20+ sin?e) (1-2 sin 20) = 1. cos (20) = cos (20) OD. 1-2 sin 20 cos 20-2 sin 60 = (cos20+ 1) (sin ²0-2 sin e) = 1. cos (20) = cos (20)