$\"\"$

The polar equation is $\"\"$ .

Convert the polar equation to a rectangular equation.

$\"\"$

Take tangent of each side.

$\"\"$ .

Substitute $\"\"$ .

$\"\"$

$\"y$

$\"begin$ .

The equation $\"begin$ is in the form of line equation $\"\"$ .

The graph of $\"\"$ is a line passing through the pole making an angle of $\"\"$ with the polar axis.

$\"\"$

Graph:

Graph the polar function $\"\"$ :

$\"graph$

$\"\"$

Graph of the polar function $\"\"$ is

$\"graph$