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tan(pi/4+1/2cos^(-1)x)+tan(pi/4-1/2cos^(...

`tan(pi/4+1/2cos^(-1)x)+tan(pi/4-1/2cos^(-1)x),x!=0,` is equal to `x` (b) `2x` (c) `2/x` (d) none of these

A

x

B

2x

C

`2/x`

D

`x/2`

Text Solution

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The correct Answer is:
C
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MOTION-INVERSE TRIGONOMETRIC FUNCTIONS-Section A: Domain, Range
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  15. The set of values of 'x' for which the formula 2sin^(-1)x=sin^(-1)2x s...

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  17. The number of solutions of the equation tan^(-1)(1+x)+tan^(-1)(1-x)=pi...

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  20. If cot^(-1)n/pi>pi/6,n in N , then the maximum value of n is 6 (b) ...

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