1. The problem statement, all variables and given/known data Two vectors A and B have precisely equal magnitudes. In order for the magnitude of A + B to be 100 times larger than the magnitude of A - B, what must be the angle between them? 2. Relevant equations 3. The attempt at a solution I am completely lost. Vectors are a completely new subject to me. I am not familiar with vector algebra notation yet as we haven't yet covered it, but I assume we are to solve this visually/conceptually given what we do know. Any help where to start?