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A line line makes the same angle theta w...

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

A

`3//5`

B

`1//5`

C

`2//3`

D

`2//5`

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The correct Answer is:
A
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