For point charge -3.9 C and point charge 1.2 C located at the same positions as in the previous question, (+5.0, 0.0) and (0.0, +4.0) respectively, determine the direction of the net electric field E at the origin. 1C = 10-6 Your answer should be an integer, do not include the unit. Hint: The direction is indicated by an angle measured in degrees counterclockwise from the positive x axis.