gonzo wrote:
> Is there somewhere I can find explanations and/or examples of them that are
> understandable by us regular folk?

well, the vector functions I use a lot are as follows:

th = TAN-1(y / x)
  x = r * COS(th)
  y = r * SIN(th)
  r = SQRT(x^2 + y^2)
  y = x * TAN(th)
  y = COS-1(x / r)

sin(th) = y / r
cos(th) = x / r
tan(th) = y / x

th is the angle, r is the radius or magnitude, x and y are...x and y
the last 4 formulae I had to use for the scene I'm working on right now
(had to research some of 'em out 'cuz I didn't have them in my notes
before)
Hope this helps.

-- 
Tim Cook
http://empyrean.scifi-fantasy.com

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