Solve the following problems involving inverse trigonometric functions.  A ladder 17 ft. long leans against a vertical wall. If the top slides down at 2.15ft per second. How fast is the angle of elevation of the ladder decreasing, when the lower end of is 13 ft. from the wall?

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Q: a. How fast is the top of the ladder sliding down the wall when the base of the ladder is 12 feet…

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