Direction of Net Electric Field

[bleedblue1234]

Homework Statement

A charge of -5.66 x 10-6 coulombs exists on each of the three spheres in the figure below. Sphere B is 0.364 meters from sphere A, and sphere C is 0.276 meters from sphere A.

b. Find the magnitude and direction of the net electric field at the location of sphere A (referenced to east being 0°, all angles between 0° and 360°).

The Attempt at a Solution

I got the magnitude to be 7.71 x 10 ^5 and it was correct...

so i solved for the angle and got 60.1 degrees...

but I am unsure of how this will correlate to the angle... i tried adding 270 and then 360-60.1 and neither worked

 

[bleedblue1234]

this is semi-urgent... help is appreciated... thanks everyone

 

[rl.bhat]

The resultant force is in the second quadrant.
If you find the angle by using
tanθ = - Fy/Fx , the the required angle is (180 - θ).