trigonometry

There are many spells which move in a spiral pattern, but they pretty much all use a fixed angular velocity as they spiral out. This means the movement itself increases in speed as it gets further and further away from the center. I've written a function that allows a spiral path to be traced...

hey, this is probably a simple equation, but I have not touched geometry or trig for years, and haven't been able to find an explanation in terms I am familiar with enough to use in warcraft... basically I need to solve for D: I want to be able to find the angle that is the middle of the...