1.

Which of the following pairs of functions is/are identical ?

Answer»

`f(x)=TAN(tan^(-1)x)` and `g(x)=cot(cot^(-1)x)`
`f(x)=sin(x)` and `g(x)=sin(sin(x))`
`f(x)=cot^(2) x.cos^(2)x` and `g(x)=cot^(2)x - cos^(2)x`
`f(x)=e^(ln SEC^(-1)x)` and `g(x)=sec^(-1)x`

Answer :A::B::C::D


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