If \vec{a}, \vec{b} and \vec{c} are three unit vectors such... — Mathematics 2022

Question 136 Mathematics 2022 Medium MCQ +5.00 marks · -1.00 negative

If \(\vec{a}, \vec{b}\) and \(\vec{c}\) are three unit vectors such that \(\vec{a} + \vec{b} + \vec{c} = 0\) then the value of \(\vec{a}\cdot\vec{b} + \vec{b}\cdot\vec{c} + \vec{c}\cdot\vec{a}\) is

A. 3 B. \(-\frac{3}{2}\) C. \(\frac{3}{2}\) D. -3

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