Question

What is the expanded equivalent of sin(a + b)

Answer 1

sin(a + b) = sin a .cos b + cos a . sin b

Answer 2

Answer: sin(a+b)= sin(a)*cos(b)+sin(b)*cos(a).

Explanation: we can write some trigonometric functions in different ways (some more simplified that others), in the case of the given problem, the expanded equivalent of the expression sin(a+b) can be written as follows:

sin(a+b)= sin(a)*cos(b)+sin(b)*cos(a).