I learned how to solve this in geometry in middle school, but I can't remember. This isn't homework.
I want to calculate the distance between points
A˜B and the arc
A˜B as well.
The know values are, the radius R and the S length. C is the center of the circle. The angle is not important, but it's probably involved on the arc calc.
this values are arbitrary, I only want to know how to solve.