(Q25)Is it right to say that sin (A + B) = sin A + sin B? Justify your answer.

Let A = 30° and B = 60°

L.H.S = sin (A + B)

= sin (° + °) = sin ° =

R.H.S = sin 30° + sin 60°

=
1
 +
√
2
=
√ +
2

Hence L.H.S ≠ R.H.S

So, it is not right to say that sin (A + B) = sin + sin