Q.2431 : यदि tan A + cosec A = 2 हो तो (sin² A + cosec² A) = ?

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Q.2431 : यदि tan A + cosec A = 2 हो तो (sin² A + cosec² A) = ?
(a) 1
(b) 2
(c) 4
(d) इनमे से कोई नही

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Answer :2