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

A. If A*B=-(1/2)AB, what do you know about A and B.

B. If A*B=5Ay-7Ax, find B.

2. Relevant equations

3. The attempt at a solution

Part A I know the angle is 120 degrees in between A and B. Would I know more about the two vectors from that?

Part B. I don't know where to begin to try and answer that?

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# Homework Help: Dot product

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