If - - -21 - then sin3- - sin7-sin24- - sin14-

The correct option is B 1 sin3α sin7αsin24α +sin14α =2cos5αsin( 2α)2sin19αcos5α = sin2αsin19α= sin2π21sin19π21 = sin2π21sin (π 2π21 ...

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Trigonometric Equations

If α = π21 ...

Question

If $α = \frac{π}{21}$ , then $\frac{sin 3 α - sin 7 α}{sin 24 α + sin 14 α} =$

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