The radial curve of a unit circle from a radial point 
and parametric equations
 |  |  | (1) |
 |  |  | (2) |
is another circle with parametric equations
 |  |  | (3) |
 |  |  | (4) |
Circle Radial Curve
See also
Circle, Radial CurveExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Circle Radial Curve." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/CircleRadialCurve.html