Question

sin(3pheta/2)(cospheta/2) express each product as a sum containing only sines or cosines. step by step

Answer 1

http://en.wikipedia.org/wiki/List_of_trigonometric_identities#Product-to-sum_and_sum-to-product_identities

Answer 2

Its not coming out right. i tried.

Answer 3

\[\sin(3x/2) \cos(x/2) = \frac{\sin (3x/2 + x/2) + \sin(3x/2 - x/2)}{2}\]

Answer 4

okay, thank you.