" If "theta=(pi)/(21)" then "(sin23 theta-sin7 theta)/(sin2 theta+sin14 theta)=

If theta = (pi)/(21) , then (sin23 theta-sin 7 theta)/( sin2 theta + sin 14 theta)=

If theta = (pi)/(21) , then show that (sin 23 theta - sin 7 theta)/(sin 2 theta + sin 14 theta) = -1 .

Solve sin7 theta=sin3 theta+sin theta

(sin theta+2sin3 theta+sin5 theta)/(sin3 theta+2sin5 theta+sin7 theta)=(sin3 theta)/(sin5 theta)

(sin theta+2sin3 theta+sin5 theta)/(sin3 theta+2sin5 theta+sin7 theta)=(sin3 theta)/(sin5 theta)

Prove that :(sin theta+2sin3 theta+sin5 theta)/(sin3 theta+2sin5 theta+sin7 theta)=(sin3 theta)/(sin5 theta)

Prove that : (sin theta + 2 sin 3theta + sin 5theta)/(sin 3theta + 2 sin 5theta + sin 7theta) = (sin 3theta)/(sin 5theta)

The value of expression (sin theta+3sin3 theta+5sin5 theta+3sin7 theta)/(sin2 theta+2sin4 theta+3sin6 theta) where theta=(4 pi)/(5) is equal to

Prove that sin((theta)/(2))sin((7 theta)/(2))+sin((3 theta)/(2))sin((11 theta)/(2))=sin2 theta sin5 theta