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If k1 le sin^-1 x + cos^-1 x + tan^-1 x ...

If `k_1 le sin^-1 x + cos^-1 x + tan^-1 x le k_2` then

A

`k_1 = 0, k_2 = pi`

B

`k_1 = 0, k_2 = pi/2`

C

`k_1 = pi/4, k_2 = (3pi)/4`

D

none of these

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The correct Answer is:
D
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PATHFINDER-TRIGONOMETRIC EQUATION AND INVERSE-QUESTION BANK
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