A model for a power cable suspended between two towers is given. y = 1 + 19 cosh(), -19 ≤ x ≤ 19 (a) Graph the model. Find the heights of the cable at the towers and at the midpoint between the towers. (Round your answers to three decimal places.) height at towers X height at midpoint 20 (b) Find the slope of the model at the point where the cable meets the right-hand tower. (Round your answer to three decimal places.) 1.175

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