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The simplest form of cot^-1 (1/(sqrt(x^2...

The simplest form of `cot^-1 (1/(sqrt(x^2-1))) , |x|>1` is

A

(A) `cosec^-1x`

B

(B) `-sec^-1x`

C

(C) `-cosec^-1x`

D

(D) `sec^-1x`

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