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OpenStudy (anonymous):
A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the firework is 40 feet above the ground.
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OpenStudy (anonymous):
This is my drawing |dw:1406694309973:dw|
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