Asked by ghost

Find a unit vector in the direction of the given vector.
w = 7i − 3j
Answered by oobleck
a unit vector always has magnitude 1.
So, divide <b>w</b> by |<b>w</b>|
Answered by ghost
can you show me how to do it?
Answered by Reiny
|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)
Answered by ghost
my teacher didn't let us copy the notes down and he just explain it and that's it.
Answered by ghost
is the answer is 7.62?
Answered by ghost
still waiting??
Answered by oobleck
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...
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