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10 questions from this quiz
A vector perpendicular to both vectors
a×b=−b×a\mathbf{a} \times \mathbf{b} = -\mathbf{b} \times \mathbf{a}a×b=−b×a
k\mathbf{k}k
−k-\mathbf{k}−k
When a\mathbf{a}a and b\mathbf{b}b are parallel
Area of parallelogram formed by the vectors
12∣a×b∣\frac{1}{2}|\mathbf{a} \times \mathbf{b}|21∣a×b∣
The j\mathbf{j}j component always has a minus sign
sinθ=∣a×b∣∣a∣∣b∣\sin\theta = \frac{|\mathbf{a} \times \mathbf{b}|}{|\mathbf{a}||\mathbf{b}|}sinθ=∣a∣∣b∣∣a×b∣
(r−a)×b=0(\mathbf{r} - \mathbf{a}) \times \mathbf{b} = \mathbf{0}(r−a)×b=0
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