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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 3 · Set 2 · Q6
The direction cosines of vector BA, where coordinates of A and B are (1,2,-1) and ( 3,4,0 ) respectively, are:
The direction cosines of vector $\displaystyle \overrightarrow{\mathrm{BA}}$, where coordinates of A and B are $\displaystyle (1,2,-1)$ and ( $\displaystyle 3,4,0$ ) respectively, are :
Official answer
(B)
$\displaystyle -\frac{2}{3},-\frac{2}{3},-\frac{1}{3}$
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