CBSE 2023 · Region 5 · Set 2 · Q14 · 1 mark
A unit vector $\displaystyle \hat{a}$ makes equal but acute angles on the co-ordinate axes. The projection of the vector $\displaystyle \hat{a}$ on the vector $\displaystyle \vec{b}=5 \hat{i}+7 \hat{j}-\hat{k}$ is
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle \frac{11}{15}$
Vector AlgebraProduct of Two VectorsApplymcqmedium
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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.