$\"\"$

\

The point on the polar coordinates is $\"\"$ .

\

Rectangular coordinates : $\"\"$ and $\"\"$ .

\

$\"\"$

\

Substitute $\"\"$ in above equation.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ in above equation.

\

$\"\"$

\

$\"\"$ .

\

Rectangular coordinates are $\"\"$ .

\

$\"\"$

\

Rectangular coordinates are $\"\"$ .