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If 0< x< 1,then tan^(-1)(sqrt(1-x^2)/(1+...

If `0< x< 1`,then `tan^(-1)(sqrt(1-x^2)/(1+x))` is equal to

A

`1/2cos^(-1)x`

B

`cos^(-1)sqrt((1+x)/2)`

C

`"cos"^(-1)sqrt((1-x)/2)`

D

`1/2 sin^(-1)x`

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