The direction cosine of vector i-2 j+3 k is __________ . - Vidyadip

MCQ

The direction cosine of vector $\hat{i}-2 \hat{j}+3 \hat{k}$ is __________ .

A
$\frac{1}{14}, \frac{2}{14}, \frac{3}{14}$
B
$\frac{-1}{\sqrt{14}}, \frac{-2}{\sqrt{14}}, \frac{-3}{\sqrt{14}}$
✓
$\frac{1}{\sqrt{14}}, \frac{-2}{\sqrt{14}}, \frac{3}{\sqrt{14}}$
D
$1,-2,3$

✓

Answer

Correct option: C.

$\frac{1}{\sqrt{14}}, \frac{-2}{\sqrt{14}}, \frac{3}{\sqrt{14}}$

C

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