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A 20-Ft Ladder Leaning Against a Wall Begins to Slide

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A 20-ft ladder leaning against a wall begins to slide. How fast is the angle between the ladder and the wall changing at the instant of time when the bottom of the ladder is 13 ft from the wall and sliding away from the wall at the rate of 4 ft/sec? Round the answer to the nearest hundredth. A 20-ft ladder leaning against a wall begins to slide. How fast is the angle between the ladder and the wall changing at the instant of time when the bottom of the ladder is 13 ft from the wall and sliding away from the wall at the rate of 4 ft/sec? Round the answer to the nearest hundredth. (figure not to scale) (figure not to scale)

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