$\"\"$

The center of the circle is $\"\"$ .

The radius of the circle is $\"\"$ .

The polar coordinates of the circle are $\"\"$ and $\"\"$ .

Where $\"\"$ is the center of circle and $\"\"$ is the radius of circle.

Substitute $\"\"$ and $\"\"$ in polar coordinates.

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

The parametric equations are $\"\"$ and $\"\"$ .

$\"\"$

The parametric equations are $\"\"$ and $\"\"$ .