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1. |
If \(\left| {{\rm{\vec a}}} \right| = 2\) and \(\left| {{\rm{\vec b}}} \right| = 3\), then \({\left| {{\rm{\vec a}} \times {\rm{\vec b}}} \right|^2} + {\left| {{\rm{\vec a}} \cdot {\rm{\vec b}}} \right|^2}\) is equal to |
A. | 72 |
B. | 64 |
C. | 48 |
D. | 36 |
Answer» E. | |