Tarzan with a mass of 56.2 kg stands atop a branch in the African rain forest. He grabs this 28.7 m long vine and swings out. Initially the vine made an angle of 33.0° to the vertical when he grabbed it. At the lowest point of his trajectory, he picks up Jane (mass = 43.0 kg) and continues his swinging motion. What angle relative to the vertical will the vine have when Tarzan and Jane reach the highest point of their trajectory?