$\"\"$

The equation is $\"\"$ .

The polar coordinates are related to Cartesian coordinates by the equation $\"\"$ .

Where $\"\"$ .

Change the polar equation into Cartesian equation.

$\"\"$ .

From the reciprocal identity : $\"\"$ . \ \

$\"\"$

Multiply each side by $\"\"$ .

$\"\"$

Remember that the polar coordinates are related to Cartesian coordinates by the equation

$\"\"$ , where $\"\"$ .

Therefore, $\"\"$ .

$\"\"$

The equation $\"\"$ is a vertical straight line with $\"\"$ intercept $\"\"$ .