Asked by Emilia

A ladder 10 feet long rests against a vertical wall. If the bottom of the
ladder slides away from the wall 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 /4
radians?
Answered by drwls
What kind of a number is /4 ?
Answered by Julia
I believe it's suppose to be Pi/4 radians
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