$\"\"$

The polar equation is $\"\"$ .

Convert the polar to rectangular equation.

$\"\"$

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

$\"\"$

$\"\"$ .

The equation is in the form of standard form of circle equation $\"\"$ , where $\"\"$ is the center of the circle and $\"\"$ is the radius of the circle.

Here, center is $\"\"$ and radius is $\"\"$ .

The rectangular form of equation is $\"\"$ .

Center is $\"\"$ and radius is $\"\"$ .

$\"\"$

The rectangular form of equation is $\"\"$ .

Center is $\"\"$ and radius is $\"\"$ .