Cross Product:

$\overline{)\stackrel{\mathbf{\rightharpoonup}}{\mathbf{A}}{\mathbf{\times}}\stackrel{\mathbf{\rightharpoonup}}{\mathbf{B}}{\mathbf{=}}\stackrel{\mathbf{\rightharpoonup}}{\mathbf{|}\mathbf{A}}{\mathbf{\left|}}{\mathbf{\right|}}\stackrel{\mathbf{\rightharpoonup}}{\mathbf{B}}{\mathbf{|}}{\mathbf{s}}{\mathbf{i}}{\mathbf{n}}{\mathbf{\theta}}}$

*V*⃗ 1 and *V*⃗ 2 are different vectors with lengths *V*1 and *V*2 respectively. Find the following, expressing your answers in terms of given quantities.

**Part A. **If *V*⃗ 1 and *V*⃗ 2 are perpendicular, |*V*⃗ 1×*V*⃗ 2| =

**Part B. **If *V*⃗ 1 and *V*⃗ 2 are parallel, |*V*⃗ 1×*V*⃗ 2| =

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