Deriving an angle from three points

[Mark Wieder]

gmccarthy-

Wednesday, December 16, 2009, 2:07:46 AM, you wrote:

> By the way again, Mark's method is also correct if you fix the variable names
> as shown below.
> Normally a triangle with points ABC have their sides named with side b
> between A and C so it is opposite angle B...etc.

Quite correct. In my defense, it was one in the morning here after a
long day...

-- 
-Mark Wieder
 mwieder at ahsoftware.net