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The minimum distance between the curves...

The minimum distance between the curves `y=tanx, AA x in (-(pi)/(2),(pi)/(2)) and (x-2-(pi)/(4))^(2)+y^(2)=1` is

A

`sqrt(5)-1`

B

`sqrt(5)+1`

C

`sqrt(2)-1`

D

2`

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The correct Answer is:
A
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