- #1

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## Homework Statement

If x + v = u

Prove x

**x**v = u

**x**v = x

**x**u

## The Attempt at a Solution

I don't even know where to start with this. I thought that magnitude of the resultant vector would have to be equal. So I started messing with each to see if I could find a pattern.

x

**x**v = | x|| v| sin θ

This is a crap approach I can't find anything. Please give me a hint not the answer. I just can't seem to draw the information in my text together to give myself enough to show this. Thank you.