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Which of the following pairs of function...

Which of the following pairs of function/functions has same graph? `y=tan(cos^(-1)x); y=(sqrt(1-x^2))/x` `y=t a n(cot^(-1)x);y=1/x` `y="sin"(tan^(-1)x); y=x/(sqrt(1+x^2))` `y="cos"(tan^(-1)x); y=sin(cot^(-1)x)`

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ALLEN-INVERSE TRIGONOMETRIC FUNCTIONS-All Questions
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  4. The solution set of the equation sin^(-1) sqrt(1 - x^(2)) + cos^(-1)...

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  6. If 0ltxlt1, then "tan"^(-1)(sqrt(1-x^(2)))/(1+x) is equal to

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  15. Evaluate: sin(cot^(-1)x) (ii) cos(tan^(-1)x)

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  16. sin(cot^(-1)(tan(tan^(-1)x))),"x" in (0," 1]

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  19. x≥0,y≥0,z≥0 and tan^(-1) x+tan^(-1) y+tan^(-1) z=k, the possible value...

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  20. x≥0,y≥0,z≥0 and tan^(-1) x+tan^(-1) y+tan^(-1) z=k, the possible value...

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