(1)

Reference angle of $\"\"$ .

Converte in to degrees is

$\"\"$

Find reference angle.

$\"\"$

Reference angle of $\"\"$ is $\"\"$

(2)

$\"\"$

Apply pythogarean theorem then

$\"\"$

In the $\"\"$ Sin function is negative and cos function is positive.

$\"\"$

(3)

Graph the equation is $\"\"$ .

$\"\"$