1. The problem statement, all variables and given/known data In a region of two-dimensional space, there are three fixed charges: +1 mC at (0, 0), -2 mC at (16 mm, -6 mm), and +3 mC at (-6 mm, 20 mm). What is the net force on the -2-mC charge? -magnitude -direction (° counterclockwise from the +x-axis) 2. Relevant equations F = k*q1*q2 / d^2 3. The attempt at a solution I got the magnitude correct. Fnetx: 8.77e07 N and Fnety: 5.71e07 N ; magnitude: 1.05e08 N. When I try to get the angle however my answer of 145 degrees is wrong. I don't understand why. I used arctan(Fnety/Fnetx).