" 5."sin theta+sin2 theta+sin3 theta=0

If" " 0 < theta < pi/2, " then show that " sin theta sin 2 theta sin 3 theta le 9/16

Solve 4sin theta sin2 theta sin4 theta=sin3 theta

sin5theta + sin2theta=0

Solve the following equations: sin3 theta+sin2 theta+sin theta=0

sin3 theta=4sin theta sin2 theta sin4 theta in0<=theta<=pi has

Solve the following: sin theta + sin 2 theta + sin 3 theta + sin 4 theta=0

Prove that ( cos theta + cos 2 theta + cos 3 theta + cos 4 theta)/(sin theta + sin 2 theta + sin 3 theta + sin 4 theta)= cot ""(5theta)/(2).

Sum to terms of the series sin theta sin2 theta+sin2 theta sin3 theta+sin3 theta sin4 theta+... is equal to

sin theta + sin3 theta + sin5 theta = 0