1.

If 0 le x le (pi)/(3) then range of f(x) = sec((pi)/(6) - x) sec((pi)/(6) + x) is

Answer»

`((4)/( SQRT3) , OO)`
`[ (4)/( sqrt3) , oo)`
`( 0, (4)/( sqrt3) ]`
`( 0, (4)/( sqrt3))`

ANSWER :B


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