MCQ
यदि $\int_0^k \frac{\cos x}{1+\sin ^2 x} d x=\frac{\pi}{4}$, तब $k=$
  • A
    1
  • B
    $\frac{\pi}{4}$
  • $\frac{\pi}{2}$
  • D
    $\pi$

Answer

Correct option: C.
$\frac{\pi}{2}$
C

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