$\"\"$

The function is $\"\"$ .

The graph of the function is constant line.

Convert the function in rectangular form $\"\"$ to function in polar form $\"\"$ .

Conversion formula : $\"\"$ and $\"\"$ .

Substitute $\"\"$ in the above equation.

$\"\"$

Graph :

Draw polar coordinate plane.

Graph the polar equation $\"\"$ .

$\"\"$

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

$\"\"$