Get Polygon Side Length From Radius

[therealdrag0]

I'm doing some programing and I am wondering how I can find the length of a Polygon's side (variable number of sides) from the radius (distance between center and one corner).

Thank you

_Zachariah

 

[Integral]

It is a simple application of geometry and Trig.

You know the side length and included angle (this is determined by the number of sides). Draw a picture and apply the definition of the Sin.

 

[therealdrag0]

I found what I needed: http://www.mathopenref.com/polygonsides.html