Given: Sine squared x = StartFraction 1 minus cosine (2 x) Over 2 EndFraction
Prove:Sine (StartFraction x Over 2 EndFraction) = plus-or-minus StartRoot StartFraction 1 minus cosine (x) Over 2 EndFraction EndRoot
Complete the steps of the proof.
♦:
♣:
answer: half angle, x
