A) 48
B) 16
C) 8
D) None of these
Correct Answer: B
Solution :
\[{{(\mathbf{a}\times \mathbf{b})}^{2}}={{(|\mathbf{a}||\mathbf{b}|\,\,\sin \theta )}^{2}}\] \[={{(4.2\,\,\sin \,{{30}^{o}})}^{2}}={{\left( 8.\frac{1}{2} \right)}^{2}}={{4}^{2}}\]\[=16\].You need to login to perform this action.
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