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20-12-2022
Mathematics

Answered

a hot-air balloon is rising straight up at 5 ft/sec. an observation area is located 80 feet from the take-off point. at the moment that the balloon reaches a height of 60 feet: (a) how fast (in radians/sec) is the angle of elevation from the observation area to the balloon changing? (b) how fast is the distance between the observation area and the balloon changing?

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