For the cardioid given parametrically as
 |  |  |
(1)
|
 |  |  |
(2)
|
the involute is given by
 |  |  |
(3)
|
 |  |  |
(4)
|
which is a mirror-image cardioid with 
.
Cardioid Involute
See also
Cardioid, Cardioid Evolute, InvoluteExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Cardioid Involute." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CardioidInvolute.html