1.

A line makes the same angle theta, with each of the x and axis. If the angle beta, which it makes with y-axis, is such that sin^(2)beta=3sin^(2)theta, then cos^(2)theta equals:

Answer»

`(3)/(5)`
`(1)/(5)`
`(2)/(3)`
`(2)/(5)`

ANSWER :A


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