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Can anyone help me, please. C. The angle of elevation of a hot air balloon, climbing vertically, changes from 25' at 10:00am to 60 at

Can anyone help me, please.

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C. The angle of elevation of a hot air balloon, climbing vertically, changes from 25' at 10:00am to 60" at 10:02am. The point of observation of the angle of elevation is situated 300 meters away from take-off point. What is the upward speed, assumed constant, of the balloon? h2 60" @ 10:02 am }25" @ 10: 00 am 300 meters

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