A ladder 15ft long rest against a vertical wall. Its top slides down the wall while its bottom moves away along with the level ground at a speed of 2 ft/s . How fast is the angle between the top of the ladder and the wall changing when the angle is π/3 radians.
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Expert's answer
2020-12-08T02:41:28-0500
Ladder and wall can be regarded as sides of a right triangle
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