[" Q.2If "alpha=(pi)/(17)" ,then the val...

[" Q.2If "alpha=(pi)/(17)" ,then the value of "(sin21 alpha-sin alpha)/(sin16 alpha+sin4 alpha)" is equal to "],[[" (A*) "-1," (B) "0," (C) "1," (D) "(1)/(sqrt(2))]]

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