Talk:Area of Sector

This seems to be assuming that the area of the sector is proportional to the length of the arc which is the measure of the angle. This looks quite plausible from the picture, but I do not see any proof here.

The way to prove this is to calculate both by doing different integrals and showing the results are in proportion. (They are both proportional the $\arcsin\theta$ ).


 * Good call. Go to it. --prime mover (talk) 04:54, 13 January 2019 (EST)