Q.2433 : यदि sin A / (1 + cos A) + sin A / (1

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Q.2433 : यदि sin A / (1 + cos A) + sin A / (1 - cos A) = 4 हो तो A = ?
(a) 30°
(b) 105°
(c) 45°
(d) 60°

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Answer :30°