A boat is towed toward a dock by a cable attached to a winch that stands 10 feet above the water level (see figure). Let be the angle of elevation of the winch and let be the length of the cable as the boat is towed toward the dock. de 1. As the boat is pulled in, is increasing or decreasing? What is the sign of dl 3. Show that 2. Use an inverse trigonometric function to set up a relationship between 0 and l. de dl 10 ft 10 √²-100 Algebra is fun!? and why?

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