1.

Identify the pair(s) of functions which are identical

Answer»

`y=TAN(cos^(-1)X),y=(sqrt(1-x^(2)))/x`
`y=tan(COT^(-1)x),y=1/x`
`y=sin(arc ta x),y=x/(sqrt(1+x^(2)))`
`y=cos(tan^(-1)x),y=sin(cot^(-1)x)`

ANSWER :A::B::C::D


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