1. The problem statement, all variables and given/known data The .274 and .88 was found using the equation of electrostatic force . 2. Relevant equations K=q1q2/d^2 3. The attempt at a solution Would I just tan inverse of .274N and .88N which would be 17 degrees. However my question is: how to determine the reference pt: would it just be 17 degrees or 180-17 degrees?