1.

A line in 3-dimensional space makes an angle theta(0ltthetalepi//2) with both x and y-axis. Then the set of all values of theta is the interval:

Answer»

`(0,(pi)/(4)]`
`[(pi)/(6),(pi)/(3)]`
`[(pi)/(4),(pi)/(3)]`
`((pi)/(6),(pi)/(2)]`

Answer :C


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