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OpenStudy (elise_kong):
An observer notices an aeroplane flying directly overhead. Two minutes later the aeroplane is at an angle of elevation of 27 degree. Assuming the aeroplane is travelling with constant speed and altitude, what will be its angle of elevation after another two minutes?
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OpenStudy (stamp):
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OpenStudy (stamp):
|dw:1461559369375:dw|
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