Posted by meeh on Sunday, November 16, 2008 at 2:42am.
show that the area(A) of an isosceles triangle, whose equal sides are of length s and angle between them is theta, is A=1/2s^2sin theta

calculus  bobpursley, Sunday, November 16, 2008 at 7:21am
You know the althtude is S*sinTheta from the diagram
Bsase is s
Area=1/2 base*altitude.