CBSE 2023 · Region 3 · Set 1 · Q10 · 1 mark
If a vector makes an angle of $\displaystyle \frac{\pi}{4}$ with the positive directions of both $\displaystyle x$-axis and $\displaystyle y$-axis, then the angle which it makes with positive $\displaystyle z$-axis is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \frac{\pi}{2}$
Three Dimensional GeometryDirection Cosines and Direction Ratios of a LineApplymcqmedium
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CBSE Class 12 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.