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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

`30^@`

B

`45^@`

C

`60^@`

D

`75^@`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

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