A baby elephant is stuck in a mud hole. To help pull it out, game keepers use a rope to apply force A, as part (a) of the drawing shows. By itself, however, force A is insufficient. Therefore, two additional forces B and C are applied, as in part (b) of the drawing. Each of these additional forces has the same magnitude F and is oriented at θ = 20.5 away from A. The magnitude of the resultant force acting on the elephant in part (b) of the drawing is five times that in part a. Find the ratio F / FA.

Can someone help me get started on this problem? I'm not sure where to put all the pieces. Thanks.