JEE Math Practice Question
$$\mathop {\lim }\limits_{n \to \infty } \left[ {{1 \over {{n^2}}}{{\sec }^2}{1 \over {{n^2}}} + {2 \over {{n^2}}}{{\sec }^2}{4 \over {{n^2}}}.... + {1 \over n}{{\sec }^2}1} \right]$$ equals
- A.$${1 \over 2}\sec 1$$
- B.$${1 \over 2}$$cosec 1
- C.tan 1
- D.$${1 \over 2}$$tan 1
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