$\"\"$

The polar equation is $\"\"$ .

$\"\"$

Transform the equation to rectanglular coordinates.

$\"\"$

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

$\"\"$

Apply formula: $\"r$ and $\"\"$ .

$\"\"$

$\"\"$ .

The equation is standard equation of a circle with center at $\"\"$ in rectangular coordinates and the radius $\"\"$ .

$\"\"$

The equation is $\"\"$ with center at $\"\"$ in rectangular coordinates and the radius $\"\"$ .

Graph:

Graph the polar equation $\"\"$ :

$\"graphing$

Observe the graph:

The graph has a hole at $\"\"$ .

$\"\"$

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

$\"graphing$