Ababy elephant is stuck in a mud hole. to pull it out, game keepers use a rope to apply a force fa, as part a of the drawing shows. by itself, however, force fa is insufficient. therefore, two additional forces fb and fc are applied, as in part b of the drawing. each of these additional forces has the same magnitude f. the magnitude of the resultant force acting on the elephant in part b of the drawing is k times larger than that in part a. find the ratio f/fa when k = 2.10. the angle is 16 degrees.
the answer must be in 4 significant figures.