Clojurians Log v2

That's a bit of a trick question. Trig is such an important part of graphics programming, you might as well have asked "Are there articles about uses of math in graphics programming?"

One thought that comes to mind: Look up a tutorial for doing "look-at" or "inverse kinematics", which both use atan2 to great effect.

If you've got more specific desires, lay them out and I'll see what I can dig up for you.