# Polar Equation of Conic

Some important results and formulas regarding the polar equation of conic are listed here:

1. Polar equation of conic is

• If $e < 1$ conic is an ellipse.
• If $e > 1$ conic is hyperbola.
• If $e = 1$ conic is parabola

2. Angle between two curve is given by

3. Two curves are perpendicular to each other if