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- The jack on an oil well goes up and down, pumping oil out of the ground. As it does so, the distance varies sinusoidally with time. At time = 1 sec, the distance is at its maximum, 3.7 meters. At time = 4 sec, distance is at its minimum, 1.5 m. Write an equation to model the motion of the jack.Find the cosine equation of graphSketch the graph of the equation x = 4