A point charge q_1=-4.00nC is at the point x = 0.600 meters, y = 0.800 meters, and a second point charge q_2=+6.00nC is at the point x = 0.600 meters, y = 0.
A) Calculate the magnitude E of the net electric field at the origin due to these two point charges. Express your answer in newtons per coulomb to three significant figures.
B) What is the direction, relative to the negative x axis, of the net electric field at the origin due to these two point charges.
Express your answer in degrees to three significant figures.