1.

\sqrt{\frac{1+\sin A}{1-\sin A}}=?(a) \sec A+\tan A(b) $\sec ^{2} A+\tan ^{2} A \quad$(c) $) \quad \sec ^{2} A-\tan ^{2} A$(d) \quad \sec A \tan A

Answer»

secA+tanAwill be the answer



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