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April 20, 2014

Homework Help: Math

Posted by Linda on Monday, April 2, 2012 at 4:18am.

A projectile is fired upward 200 ft from an observer. The height in feet of the projectile after t seconds is given by s=-16t2 + 180t. What is the rate of change of the angle of elevation of the observer to the projectile after 7 seconds?
I don't understand how to get there!

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