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July 3, 2015

Homework Help: calculus

Posted by Paige on Tuesday, April 24, 2012 at 11:53pm.

A drone aeroplane is flying horizontally to a constant height of 4000 ft above a fixed radar tracking station. At a certain instant the angle of elevation theta is 30 degrees and decreasing, and the speed of the aeroplane is 300 mi/h

a) How fast is theta decreasing at this instant? express results in units of deg/s

b) How fast is the distance between the aeroplane and the radar station changing at this instant? express the rates in units of ft/s 1 mi = 5280ft

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