If alpha is an acute angle and sin(alpha...

If `alpha` is an acute angle and `sin(alpha/2)=sqrt((x-1)/(2x))` then `tan alpha` is

A

`sqrt((x-1)/(x+1))`

B

`(sqrt(x-1))/(x+1)`

C

`sqrt(x^(2)-1)`

D

`sqrt(x^(2)+1)`

Verified by Experts

The correct Answer is:

C

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