$\"\"$

The trigonometric expression is $\"\"$ .

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

Apply trigonometric inverse form : $\"\"$ .

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

Find the adjacent side by applying the pythagorean theorem.

$\"graph$

$\"\"$

$\"\"$ \ \

$\"\"$

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

The simplified expression is $\"\"$ .