Question

How do you normalize `(- 4 i - 5 j + 2k)`?

Answer 1

`1/ (3 sqrt 5) (- 4 i - 5 j + 2k)`

Explanation:

to normalise, divide it by it's magnitide

which is `sqrt( (-4)^2 + (-5)^2 + 2^2) = 3 sqrt 5`

to give

`1/ (3 sqrt 5) (- 4 i - 5 j + 2k)`