MCQ
$2 \tan ^{-1} x=$
  • $\sin ^{-1} \frac{2 x}{1+x^2}$
  • B
    $\sin ^{-1} \frac{2 x}{1-x^2}$
  • C
    $\sin ^{-1} \frac{1-x^2}{1+x^2}$
  • D
    $\sin ^{-1} \frac{1+x^2}{1-x^2}$

Answer

Correct option: A.
$\sin ^{-1} \frac{2 x}{1+x^2}$
(A)

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