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.