At what angle does an electron leave the electric field?

Using the velocities in the x- and in the y-direction you can now also calculate the angle \(\theta\) at which the electrons leave the E-field of the plate capacitor.Angle at what electrons leave the electric field

Task:

When leaving the capacitor, an electron has a velocity in the x-direction of \(v_x=4{,}20\cdot 10^7\,\rm{\frac{m}{s}}\) ans in y-direction of \(v_y=1{,}68\cdot 10^7\,\rm{\frac{m}{s}}\).