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Q 1247112983.
A line `OP` through origin `O` is inclined at `30^o` and `45^o` to `OX` and `OY` respectively. The angle at which it is inclined to `OZ` is:
A
Such line does not exist.
B
`60°`
C
`45°`
D
`90°`
HINT
Let `l, m, n` be the direction cosines of the given vector, then `l^2 + m^2 + n^2 = 1`
Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)
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