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August 30, 2014

Homework Help: Calculus

Posted by Anonymous on Wednesday, October 19, 2011 at 1:22am.

A lighthouse is located on a small island 4 km away from the nearest
point P on a straight shoreline. Its light makes 3 revolutions
per minute. How fast is the beam of light moving along the shoreline
when it is 1.7 kilometers from
P

?

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