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Welke formule is correct?
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| A. \(\left|\,\overrightarrow{AB}\,\right| = \left|\,\overrightarrow{B}\,\right|-\left|\,\overrightarrow{A}\,\right|\) |
| B. \(\overrightarrow{A}\cdot \overrightarrow{B}\,= \left|\,\overrightarrow{AB}\,\right|\cdot \cos\, ( \overrightarrow{A},\overrightarrow{B})\) |
| C. \(\overrightarrow{A}\cdot\overrightarrow{B}= \left| \overrightarrow{A}\,\right| + \left| \overrightarrow{B}\,\right| +\cdot\cos\,( \overrightarrow{A},\overrightarrow{B})\) |
| D. \(\left|\,\overrightarrow{AB}\,\right|= \left| \overrightarrow{A}\,\right| \cdot \left| \overrightarrow{B}\,\right| \cdot\cos\,( \overrightarrow{A},\overrightarrow{B})\) |
| E. \(\overrightarrow{A}\cdot\overrightarrow{B}= \left| \overrightarrow{A}\,\right| \cdot \left| \overrightarrow{B}\,\right| \cdot\cos\,( \overrightarrow{A},\overrightarrow{B})\) |
E is correct want dit is puur de definitie van het inproduct (ook scalair product genoemd) van twee vectoren.
