$\"\"$

The polar equation is $\"\"$ .

Transform the equation to rectanglular coordinates.

$\"\"$

Multiply on each side by $\"\"$ .

$\"\"$

Substitute $\"r$ and $\"\"$ .

$\"\"$

$\"\"$ .

The equation $\"\"$ is in the form of standard circle equation

$\"\"$ with center $\"\"$ and $\"\"$ .

$\"\"$

Graph the equation $\"\"$ .

Graph:

$\"\"$

$\"\"$ .

The equation $\"\"$ is circle with center $\"\"$ and radius $\"\"$ .

Graph of the equation $\"\"$ is

$\"\"$