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lim(nrarroo)((1)/(sqrt(n^(2)))+(1)/(sqrt...

`lim_(nrarroo)((1)/(sqrt(n^(2)))+(1)/(sqrt(n^(2)-1^(2)))+(1)/(sqrt(n^(2)-2^(2)))+....+(1)/(sqrt(n^(2)-(n-1)^(2))))` is equal to

A

`(pi)/(2)`

B

`sin^(-1)1`

C

`cos^(-1)(0)`

D

`2tan^(-1)1`

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