The pedal curve of a sinusoidal spiral
with pedal point at the center is another sinusoidal spiral with polar equation
A few examples are illustrated above.
The pedal curve of a sinusoidal spiral
with pedal point at the center is another sinusoidal spiral with polar equation
A few examples are illustrated above.
Weisstein, Eric W. "Sinusoidal Spiral Pedal Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SinusoidalSpiralPedalCurve.html