k, Im learning this the Trigeo-stuff this year at school, but I might get more info here, so: If I want to make a race game or just some random moving around the screen, what should I do? some Sin Cos Tan , but what if its not 3d (xyz) just 2d (xy)? Can someone give me a sample of this enginepart? .lick

Trig is simply the relationship between angles and their sides. Specifically, angles in triangles.

If you want to rotate around in a 3d environment or move around on a 2d plane, you''ll need to learn vector math after trig and some algebra involving systems of equations (to learn how matricies work).

Check out the article section under math/physics. You''ll probably find your answer there how to do this stuff, but without taking and understanding these courses I''ve described, you''ll probably be plugin in numbers without knowing what they mean.