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Suppose that the position of one particle at time t is given by x1 = 4âsin(t), y1 = 2âcos(t), 0 ⤠t ⤠2Ï and the position of a second particle is given by x2 = â4 + cos(t), y2 = 1 + sin(t), 0 ⤠t ⤠2Ï.
-find the collision points. (Enter your answers as a comma-separated list of ordered pairs)