$\mathop {\lim }\limits_{n \to \infty } \left[ {\frac{1}{{{n^2}}}{{\sec }^2}\frac{1}{{{n^2}}} + \frac{2}{{{n^2}}}{{\sec }^2}\frac{4}{{{n^2}}} + ..... + \frac{1}{n}{{\sec }^2}1} \right]$ का मान ज्ञात कीजिए।

  • A
    $\tan 1$
  • B
    $\frac{1}{2}\tan 1$
  • C
    $\frac{1}{2}\sec 1$
  • D
    $\frac{1}{2}\csc 1$

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