Determine the magnitude and direction of the resultant of the three coplanar forces given below,when they act at a point:

Force A: 10 N acting at 45 degrees from the positive horizontal axis
Force B: 87 N acting at 120 degrees from the positive horizontal axis
Force C: 15 N acting at 219 degrees from the positive horizontal axis

Do you know how to do vector addition? Break each force vector into its x and y magnitudes, add the three x magnituides to get the total x magnitide of the resukltant vector, and do the same for the y's . Then convert the total x,y magbitudes of the resultant to a total magnitude and direction. Hope this helps.