Normalize the vectors (create unit vectors in the same directions).

The diagram shows each vector after it has been
*normalized*. (Remember, this means creating a unit vector
in the same direction as the original vector).

Recall that a subscript **u** indicates a unit vector: **b _{u}**.

*Now* which dot product is larger?
**a _{u} · b_{u}** , or

Hint: remember that
**u · v** = |**u**||**v**| cos θ.
But now both vectors have length 1.0.