Step 1:

The integral is $\"\"$

Let $\"\"$ .

Differentiate with respect to $\"\"$ .

$\"\"$

Substitute $\"\"$ and $\"\"$ in the integral.

$\"\"$

Step 2:

Product to sum formula for sine functions: $\"\"$

Here $\"\"$ and $\"\"$ .

Substitute above values in the formula.

$\"\"$

Integration of sine function: $\"\"$

$\"\"$

Replace $\"\"$ with $\"\"$ .

$\"\"$

Solution:

$\"\"$ .