Question: 7. A ladder 10 ft long rests against a vertical wall. if the bottom of the ladder 3 slides away from the wall at a

7. A ladder 10 ft long rests against a vertical wall. if the bottom of the ladder 3 slides away from the wall at a speed of 2ft/s, how fast is the angle between the top of the ladder and the wall changing when the angle is 7 /4 radians

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