यदि $\int_{0}^{\pi/2} \tan^{n}(x) dx = k \int_{0}^{\pi/2} \cot^{n}(x) dx$ है,तो

  • A
    $k = 1$
  • B
    $k = 2$
  • C
    $k = \frac{1}{2}$
  • D
    $k = 3$

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