Find a unit vector in the direction of the given vector.
w = 7i − 3j
yes, |w| = 7.62, or more exactly, √58
So, the unit vector is
7/√58 i − 3/√58 j
I am astonished when you say your teacher didn't let you make notes.
That sounds like rubbish.
And there is always your text, and google...
a unit vector always has magnitude 1.
So, divide w by |w|
can you show me how to do it?
|w| = √(7^2 + (-3)^2)
now divide the original by that magnitude.
(I am surprised you don't have examples of those
simple and fundamental problems in your text or your notes
from class)