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If |cos^(-1) ((1-x^(2))/(1+x^(2)))| lt p...

If `|cos^(-1) ((1-x^(2))/(1+x^(2)))| lt pi/3`, then

A

` x in [-(1)/(sqrt(3)), (1)/(sqrt(3))]`

B

` x in (-(1)/(sqrt(3)), (1)/(sqrt(3)))`

C

` x in [0, (1)/(sqrt(3))] `

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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