Give the direction angle, θ, of the net electric force experienced by charge 1. note that θ is measured counterclockwise from the positive x axis.

The angle's direction is in clockwise direction. since the charge 1 is at the top of the triangle, then the electric force will flow at the clockwise direction going to the charger 2 having q2 = - q. This is because it counter flows the magnetic force which is denoted by the direction of the measurement of the angle.