Charged particles 1, 2, and 3 (q₁ = 10.0 μC , q₂ = -4.00 μC , and q₃ = -6.00 μC ) are arranged in an equilateral triangle in an xy coordinate system. Particle 1 is at (0, 0), particle 2 at (1.0 m, 0), and particle 3 at (0.50 m, 3/2 m).

A. Determine the magnitude of the electric force exerted on particle 3.

B. Determine the direction angle of the electric force exerted on particle 3 measured counterclockwise from the positive x axis.