Step 1:

The equation is $\"\"$ on the interval $\"\"$ .

Using formula $\"\"$ .

$\"\"$

Step 2:

$\"\"$ then, general solution of sine function is $\"\"$ , where $\"\"$ is any integer.

Take $\"\"$ .

$\"\"$

Take $\"\"$

$\"\"$

Take $\"\"$

$\"\"$

The solutions required on the interval $\"\"$ .

Hence $\"\"$ are not considered.

The solutions of equation are $\"\"$ .

Solution:

The solutions of equation are $\"\"$ .