1.

The area of a triangle formed by the tips of vectors \(\bar a,\;\bar b\;and\;\bar c\) is

A. \(\frac{1}{2}\left( {\bar a - \bar b} \right) \cdot \left( {\bar a - \bar c} \right)\)
B. \(\left. {\left. {\frac{1}{2}} \right|\left( {\bar a - \bar b} \right) \times \left( {\bar a - \bar c} \right)} \right|\)
C. \(\left. {\frac{1}{2}} \right|\left. {\bar a \times \bar b \times \bar c} \right|\)
D. \(\frac{1}{2}\left( {\bar a \times \bar b} \right) \cdot \bar c\)
Answer» C. \(\left. {\frac{1}{2}} \right|\left. {\bar a \times \bar b \times \bar c} \right|\)


Discussion

No Comment Found