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If x gt 0 and alpha lt (pi)/(2) then (sq...

If `x gt 0 and alpha lt (pi)/(2)` then `(sqrt(x^(2) +x)+ (tan ^(2) alpha)/(sqrt(x^(2)+x)))` is never less than-

A

`5/2`

B

`sec alpha`

C

`2`

D

`2 tan alpha`

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The correct Answer is:
D
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