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A line AB in three-dimensional space mak...

A line AB in three-dimensional space makes angles `45^@` and `120^@` with the positive x-axis and the positive y-axis respectively. If AB makes an acute angle `theta` with the positive z-axis, then `theta` equals :

A

`60^(o)`

B

`75^(o)`

C

`30^(o)`

D

`45^(o)`

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The correct Answer is:
A
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