A way of multiplying two vectors:

**a × b** = |**a**| |**b**| sin(θ) **n**

Where || means "the magnitude (length) of"

θ is the angle between the vectors

and **n** is the unit vector at right angles to both **a** and **b**

Example: the lengths of two vectors are 3 and 4, and the angle between them is 30°:

**a × b** = 3 × 4 × sin(30°) × **n** = 6**n**