Question

Express sin120+sin40 as the product of sines and cosines.

Answer 1

Answer:

sin 120+ sin 40 =................

Answer 2

Answer:

take sin 120 as sin A and take sin 40 as sin B

Step-by-step explanation:

then use the formula of sin (A + B) = sin A cos B + sin B cos A

you will get answer of 2sin80 cos40