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lim(n rarr oo) sum(r=1)^(n) r/n^(2) sec^...

`lim_(n rarr oo) sum_(r=1)^(n) r/n^(2) sec^(2) (r^(2)/n^(2)) =`

A

tan 1

B

1/3 tan 1

C

1/2 tan 1

D

none of these

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Verified by Experts

The correct Answer is:
C
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