Posted by **Jeffrey** on Monday, July 25, 2011 at 10:17pm.

A balloon rises at a rate of 3 meters per second from a point on the ground 30 meters from an observer. Find the rate of change of the angle of elevation (in radians per second or rad/sec) of the balloon from the observer when the balloon is 30 meters above the ground.

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**Anonymous**, Saturday, November 28, 2015 at 6:51pm
1/20

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