Answer:
See below
Step-by-step explanation:
Find the x components of all of the forces shown, add them together, the x-component of the force F will be exactly opposite ( same magnitude but 180 degrees different)
30 cos 55 + 40 cos 205 + 50 cos 320 = 19.26 <====x component sum of all of the forces shown
F (the x component of ) will be Either - 19.26 At zero degrees
Or 19.26 at 180 degrees