1. The problem statement, all variables and given/known data There is a charge of -4.05mC at (3,0)m and a charge of +3.85mC at (10,0)m. And I have to find the strength and direction of the field at (2.5,7)m. (Direction to be in degrees). 2. Relevant equations E=(kq)/r^2 3. The attempt at a solution I've found the fields to be 7.40x10^5 N/C for the first and 3.28x10^5 N/C for the second on the point. And I'm stuck from here. I've started figuring out all sorts of angles but I just get swamped. Could someone please nudge me in the right direction?