1.

If cos A + cos2 A = 1, then sin2 A + sin4 A =(a) −1(b) 0(c) 1(d) None of these

Answer» If cos A + cos2 A = 1, then sin2 A + sin4 A =



(a) −1

(b) 0

(c) 1

(d) None of these


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