vectors

Question: If $\mathop A\limits^ \to \, \times \,\mathop B\limits^ \to \, = \,\mathop B\limits^ \to \, \times \,\mathop A\limits^ \to $ then the angle between A and B is

1) $\pi / 2$

2) $\pi / 3$

3) $\pi$

4) $\pi / 4$

Solution:

Explanation: explanation

multiplication-of-vectors

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