At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three directions. As a result, three forces act on the ball, F1→, F2→, and F3→ (see the drawing). The magnitudes of F1→ and F2→ are F1 = 89.0 newtons (N) and F2 = 84.0 N. Determine (a) the magnitude of F3→ and (b) the angle θ such that the resultant force acting on the ball is zero. (a) Number Units (b) Number Units