Posted by Billy on Monday, March 15, 2010 at 5:33pm.
a satellite camera takes a rectangular  shaped picture. the smallest region that can be photographed is a 4  km by 6  km rectangle. as the camera zooms out, the length l and width w of the rectangle increase at a rate of 3km/sec. how long does it take for the area A to be at least 4 times its original size?

Trigonometry  Alexis, Monday, January 2, 2012 at 7:02pm
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