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

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Answer 1 · 2018-04-09T13:17:27

Dividing by his module

First: Lets calculate module $sqrt((-4)^2+(-5)^2+2^2)=sqrt45=3sqrt5$

Now, lets considered the vector $(-4/(3sqrt5),-5/(3sqrt5),2/(3sqrt5))$ . This vector has module =1

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