Re: How to find unit vector

Quote:

Originally Posted by

**daigo** But if I forgot that I had to divide the components by the magnitude, I would not know how to get the unit vector. So I guess I am asking why you divide the components by the magnitude in order to get the unit vector?

**Unit vector** means a vector of **length 1**. That is why.

Re: How to find unit vector

If the vector is <a, b> then its length is, as you say, . If you multiply the entire vector, and so each component, by that, you have

and **its** length is