How do you find the sum of the unit vectors $(-9,12,-5)$ and $(6,5,-5)$ ?

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Answer 1 · 2016-07-28T11:26:59

$(-9,12,-5)$ and $(6,5,-5)$ are not unit vectors;
therefore this question is meaningless.

How do you find the sum of the unit vectors (-9,12,-5)(-9,12,-5) and (6,5,-5)(6,5,-5)?