# college

posted by on .

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

• calculus help needed - ,

What kind of a number is /4 ?

• college - ,

I believe it's suppose to be Pi/4 radians