CBSE 2023 · Region 4 · Set 3 · Q10 · 1 mark
The sine of the angle between the vectors $\displaystyle \vec{a}=3 \hat{\mathrm{i}}+\hat{\mathrm{j}}+2 \hat{\mathrm{k}}$ and $\displaystyle \overrightarrow{\mathrm{b}}=\hat{\mathrm{i}}+\hat{\mathrm{j}}+2 \hat{\mathrm{k}}$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle \sqrt{\frac{5}{21}}$
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.