cadman wrote:

> Does anyone know of a website to find trig functions (i.e. equations of
> geometric objects, equation of the intersection of a line & a plane,
> equation of line tangent to a circle.. you get the idea).  I need a
> refresher for macros, etc.
> Thanks.

The Geometry Junkyard is my top pick.

http://www.ics.uci.edu/~eppstein/junkyard/topic.html

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