vectors

Question: If $|\vec A \times \vec B| = \sqrt 3 \vec A.\vec B,$ then the value of$|\vec A + \vec B|$ is

1) ${\left( {{A^2} + {B^2} + \frac{{AB}}{{\sqrt 3 }}} \right)^{1/2}}$

2) $A + B$

3) ${({A^2} + {B^2} + \sqrt 3 AB)^{1/2}}$

4) ${({A^2} + {B^2} + AB)^{1/2}}$

Solution:

Explanation: explanation

multiplication-of-vectors

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