Question

the included angle of the two sides of constant equal length s of an isosceles triangle is (theta)
a) show that the area of the triangle is given by A = .5 s(squared) sin (theta). (Done)
b) if theta is increasing at the rate of .5 radian per minute, find the rates of change of the area when (theta)= pi/6 and (theta)/3
c) explain why the rate of change of the area of the triangle is not constant even though d(theta)/dt is constant.