Math, asked by dvsvsaazanupenuras, 1 year ago

Sin2A = 2sinA then A= a) 60 b) 45 c) 30 d ) 0

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Answered by Vinithsai

sin2A=2sinA 2sinACosA = 2SinA 2SinACosA - 2SinA = 0 2SinA(CosA - 1) = 0 The equation is satisfied where SinA = 0 or CosA = 1. None of the choices given satisfy these.

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