Added by Cassy C on April 25, 1999 at 18:41:16:
In a triangle:
Sides a,b, and c
Angles A,B,C directly opposite their matching sides. I.E. A across from a
sin2A=2sinAcosA
c^2=a^2+b^2-2ab (cosC)
when trying to find 'b' also use this formula.........
b^2=a^2+c^2-2ac (cos B)
notice angle B