If |a|=3,|b|=5,|c|=7 and a+b+c=0, then the angle between a and b … - Vidyadip

MCQ

If $|\bar{a}|=3,|\bar{b}|=5,|\bar{c}|=7$ and $\bar{a}+\bar{b}+\bar{c}=0$, then the angle between $\bar{a}$ and $\bar{b}$ is

A
$\frac{\pi}{2}$
✓
$\frac{\pi}{3}$
C
$\frac{\pi}{4}$
D
$\frac{\pi}{6}$

✓

Answer

Correct option: B.

$\frac{\pi}{3}$

$\frac{\pi}{3}$

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