Error in final equations for Circular arcs and Cubic Beziers

BezierInfo-2/docs/chapters/circles_cubic/content.en-GB.md

Line 86 in ea6f610

\textit{control}_{~1} &= (r,~k) \\

The whole unit circle situation should be scaled by r, but for the final equations, control point 1, r doesn't get multiplied to the y-term (k).

On a minor note, while reading this section, the TL;DR knowledge / assertion that I was looking for was that the vector-magnitudes of the control points from the start/end points were both the same, and equal to r*k (and the arc eqn for k, that was useful), in the direction of the circle tangent.

Thanks for the guide!