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 F, and F are F = 22.0 newtons (N) and F = 65.0 N. Determine (a) the magnitude of F, and (b) the angle such that the resultant force acting on the ball is zero.