यदि $\cot(\cos^{-1} x) = \sec(\tan^{-1} \frac{a}{\sqrt{b^2 - a^2}})$ है, तो $x$ का मान है

  • A
    $\frac{b}{\sqrt{2b^2 + a^2}}$
  • B
    $\frac{\sqrt{2b^2 - a^2}}{b}$
  • C
    $\frac{b}{\sqrt{2b^2 - a^2}}$
  • D
    $\frac{\sqrt{2b^2 + a^2}}{b}$

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