#### Haywire

I didn't use the template, because I am not having difficulties with a problem.1. Homework Statement

2. Homework Equations

3. The Attempt at a Solution

I am just starting to study rotational motion and there it appears the cross-product. I don't like to memorize formulae that I don't understand it's meaning.

Why is [tex]\vec a \times \vec b}[/tex] defined mathematically the way it is. Is there some trick to memorize?

Thanks in advance.