(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://img22.imageshack.us/img22/1254/10031833.jpg [Broken]

2. Relevant equations

3. The attempt at a solution

My attempt was based on the idea that both triangles formed by the vector components (x component,y component, and thehypotenusewhich is the magnitude of the vector itself) would be similar.

I took the length of each of the sides, -3.20 for x and 2.10 for y and individually solved for the unit vector by setting up this relationship:

(length of component)/(length of hypotenuse)=(length unit component)/1

The system rejected both of my answers. For x i got -0.836 and for y i got 0.549.

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# Homework Help: Calculating the Unit Vectors

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