a+b+c=0 such that |a|=3,|b|=5 and |c|=7. What is the angle betwee… - Vidyadip

MCQ

$\vec{a}+\vec{b}+\vec{c}=0$ such that $|\vec{a}|=3,|\vec{b}|=5$ and $|\vec{c}|=7$.
What is the angle between $\vec{a}$ and $\vec{b}$ ?

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

✓

Answer

(a) $\frac{\pi}{3}$
Explanation: $\frac{\pi}{3}$

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