1.

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

Answer»

4
-2
0
-4

Answer :B


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