MCQ
यदि $A=\tan ^{-1}$ तब sin 2A का मान निम्न है:
  • A
    $\frac{2 x}{1-x^2}$
  • B
    $\frac{2 x}{\sqrt{1-x^2}}$
  • $\frac{2 x}{1+x^2}$
  • D
    इनमें से कोई नहीं

Answer

Correct option: C.
$\frac{2 x}{1+x^2}$
C

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