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If `0lt=xlt=pi/3` then range of `f(x)=sec(pi/6-x)+sec(pi/6+x)` is `(4/(sqrt(3)),oo)` (b) `(4/(sqrt(3)),oo)` `(0,4/(sqrt(3)))` (d) `(0,4/(sqrt(3)))`

A

`((4)/(sqrt(3)), oo)`

B

`[(4)/(sqrt(3)), oo)`

C

`(0, (4)/(sqrt(3))]`

D

`(0, (4)/(sqrt(3)))`

Text Solution

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The correct Answer is:
B
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