I think the problem was not described clearly. The problem is: the radius of the circle and the parameter High are known.
Given that the line from the top of High is tangent to the circle, we are looking for the equation relating the length of the arc to the parameter high...
hello every body ..
According to the picture:
Circle radius (Radius) and height (High) is known to us. Given that the height of the draw the tangent line , I looking for the equation for length of the arc (Arc Length) was calculated based on height changes.
(sorry for my written...