Re: angles of an ellipse

A N Niel wrote:
>>Given an ellipse of radii r1 (horizontal) and r2 (vertical), I need to
>>find the angle from the origin to a point x distance around the
>>perimeter (either direction) from a point (0,r2).
>>
>>Kae
>
>
> That is known as an "elliptic integral".

thanks. That lead me here:
http://en.wikipedia.org/wiki/Elliptic_integral

I think I can figure out the maths from there.

Kae
.