$\lim _{x \rightarrow \frac{\pi}{2}} \left(\frac{2x-\pi}{\cos x}\right)$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $\frac{1}{2}$
  • C
    $-2$
  • D
    $5$

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