# What is the Formula of 2 Cos A Sin B ?

## Solution :

The formula of 2 cos A sin B is sin (A + B) – sin (A – B).

Example : Solve : 2 cos 75 sin 15.

Solution : We have,

2 cos 75 sin 15 = sin (75 + 15) – sin (75 – 15)

= sin 90 – sin 60

= 1 – $$\sqrt{3}\over 2$$

= $$2 – \sqrt{3}\over 2$$

## Similar Formulas

What is the Formula of 2 Sin A Cos B ?

What is the Formula of 2 Cos A Cos B ?

What is the Formula of 2 Sin A Sin B ?