Question

Verify:

Answer 1

\[\sin (\frac{ \Pi }{ 3 }+ v) + \sin (\frac{ \Pi }{ 3 }- v) = (\sqrt{3})\cos v\]

Answer 2

you have formulae for that problem. sin (a +/-b) = sin a cos b+/- cos a sinb. just apply respectively you get the answer.