A) \[|\,\,\mathbf{a}\times \mathbf{b}|\]
B) \[|\,\,\mathbf{a}\times \mathbf{b}{{|}^{2}}\]
C) 0
D) None of these
Correct Answer: B
Solution :
We have \[[\mathbf{a}\,\,\mathbf{b}\,\,\mathbf{a}\times \mathbf{b}]=(\mathbf{a}\times \mathbf{b})\,.\,(\mathbf{a}\times \mathbf{b})=\,|\mathbf{a}\times \mathbf{b}{{|}^{2}}\].
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