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?