Hello, Geo877!

Let the ratio beHi, I'm writing a physics engine in flash, i'm attempting to avoid trigonometry

as much as possible to avoid rounding issues. . . . . But therewillbe rounding!

I've reached a point where i basically need to draw right triangles where the ratio

between the two shorter sides is a constant and the hypotenuse can change.

I need to be able to work out and if i know and

So we have: .

Substitute into

. .

Then: .

And: .