Can anyone tell me how to find a unit vector in the direction of q?

Question

The component form is -2i-2j-4k. It is (obvioulsly) a three dimensional vector.

Answer 1

find the magnitute of that
sqrt((-2)^2+(-2)^2+(-4)^2)= sqrt(24)=2sqrt(6)
unit vector= vector/ magnitute
<-2,-2,-4>/2sqrt(6)
unit vector is <-1,-1,-2>/sqrt(6) or <-1/sqrt6, -1/sqrt6, -2/sqrt6>
sqrt= square root
good luck

Answer 2

Vector r = (-2i - 2j - 4k) = -2(i + j +2k)

Unit vector = (-2 /√6 ) ( (i + j + 2k)

Answer 3

vector / its mod!!
here -2i -2j -4k / sqrroot(24)