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If theta=pi/21, then (sin23theta-sin7the...

If `theta=pi/21,` then `(sin23theta-sin7theta)/(sin2theta+sin14theta)=`

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

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 .

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

(sin7 theta+6sin5 theta+17sin3 theta+12sin theta)/(sin6 theta+5sin4 theta+12sin2 theta)

(sin7 theta+6sin5 theta+17sin3 theta+12sin theta)/(sin6 theta+5sin4 theta+12sin2 theta)=

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(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)