The minimum value of the function ...

The minimum value of the function
`f(x)=(sinx)/(sqrt(1-cos^(2))x)+(cosx)/(sqrt(1-sin^(2)x))+(tanx)/(sqrt(sec^(2)x-1))+(cotx)/(sqrt(cosec^(2)x-1))` whenever it is defined is

A

A) 4

B

B) `-2`

C

C) 0

D

D) 2

Verified by Experts

The correct Answer is:

B

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