Mathematics
Mathematics, 21.03.2020 12:01, dondre54

A hot-air balloon floating at 950 m/h at a constant altitude of 3000m is observed to have an angle of elevation of
78º. After 20 minutes, the angle of elevation is 73º.
Calculate the angle through which the observed gas turning during those 20 minutes.


A hot-air balloon floating at 950 m/h at a constant altitude of 3000m is observed to have an angle o

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