यदि `-1 lt x lt 1`, तो `2 tan^(-1) x = ?`A. `sin^(-1). (2x)/ – InterviewSolution

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1.	यदि `-1 lt x lt 1`, तो `2 tan^(-1) x = ?`A. `sin^(-1). (2x)/(1+x^(2))`B. `sin^(-1). (2x)/(1-x^(2))`C. `sin^(-1). (1-x^(2))/(1+x^(2))`D. `sin^(-1). (1+x^(2))/(1-x^(2))`
Answer» Correct Answer - A

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