SOLUTION: an observer notices that an aeroplane flies directly overhead. two minutes later the aeroplane is at an angle of elevation of 27 degrees . assuming the aeroplane is travelling with

Question 950719: an observer notices that an aeroplane flies directly overhead. two minutes later the aeroplane is at an angle of elevation of 27 degrees . assuming the aeroplane is travelling with constant speed , what will be its angle of elevation after another two minutes .
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let's call the horizontal distance the plane covers relative to the ground observer in 2 minutes, X.

In another two minutes, the distance will increase to
So then,

Substituting,

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