Angle between vectors a=6 i+2 j-8 k and b=4 i-4 j+2 k is ________… - Vidyadip

MCQ

Angle between vectors $\bar{a}=6 \hat{i}+2 \hat{j}-8 \hat{k}$ and $\bar{b}=4 \hat{i}-4 \hat{j}+2 \hat{k}$ is ___________ .

A
$\frac{\pi}{3}$
✓
$\frac{\pi}{2}$
C
$\frac{\pi}{4}$
D
$0$

✓

Answer

Correct option: B.

$\frac{\pi}{2}$

B

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