Let u = . Find the unit vector in the direction of u, and write your answer in component form.

Question

Let u = <-4, -3>. Find the unit vector in the direction of u, and write your answer in component form.

asnaseer · Answer

what do you about unit vectors - what is it that makes a unit vector what it is?

cwrw238 · Answer

unit vector = u / mod u

anonymous · Answer

Sorry bout going away. But im not sure. I understand what to do when you have the initial point and the terminal point but i dont get what to do from here

anonymous · Answer

@cwrw238

asnaseer · Answer

what is the length of a unit vector?

anonymous · Answer

Do you mean as in the magnitude?

asnaseer · Answer

yes

anonymous · Answer

Well the formula for it is the Distance formula?

cwrw238 · Answer

yes by mod i meant magnitude

asnaseer · Answer

a unit vector is defined as a vector with length (i.e. magnitude) of 1

asnaseer · Answer

what is the magnitude of the vector u given to you in this question?

anonymous · Answer

5?

asnaseer · Answer

correct

asnaseer · Answer

so, if you divide your vector u by its magnitude, then you should end up with a unit vector in the same direction as u - understand?

anonymous · Answer

Sort of. So what you would do is -4/5 and -3/5?

asnaseer · Answer

correct

anonymous · Answer

Okay because that is one of my answers so would that be the final answer?

anonymous · Answer

And do you mind just checking my work on another one i wasnt so sure about?

asnaseer · Answer

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