यदि $\tan (\cos ^{ - 1}x) = \sin (\cot ^{ - 1}\frac{1}{2})$ है,तो $x =$

  • A
    $\pm \frac{5}{3}$
  • B
    $\pm \frac{\sqrt{5}}{3}$
  • C
    $\pm \frac{5}{\sqrt{3}}$
  • D
    इनमें से कोई नहीं

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