cardioid pedal curve

For the special pedal point of the cardioid cusp, the pedal curve of the cardioid

is       

which is Cayley's sextic

Cardioid:

• Cardioid

• Tangent

• Osculating circle

cardioid pedal curve (Cayley's sextic):

• cardioid pedal curve

• Tangent

• Osculating circle

 (pedal point at the cusp)