$\"\"$

\

The trigonometric equation is $\"\"$ .

\

$\"\"$

\

Subtract $\"\"$ from each side.

\

$\"\"$

\

Apply reciprocal identity : $\"\"$ .

\

$\"\"$

\

Divide each side by $\"\"$ .

\

$\"\"$

\

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

\

$\"\"$

\

First solve $\"\"$ .

\

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

\

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

\

The general solution of $\"\"$ is $\"\"$ , where $\"image\"$ is an integer.

\

The solutions are $\"\"$ or $\"\"$ , where $\"image\"$ is an integer.

\

\

$\"\"$

\

Now solve $\"\"$ .

\

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

\

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

\

The solutions are $\"\"$ or $\"\"$ , where $\"image\"$ is an integer.

\

$\"\"$

\

The solutions are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ , where $\"image\"$ is an integer.