Example 7.26The angle of elevation of an aeroplane from a point A on t – InterviewSolution

1.	Example 7.26The angle of elevation of an aeroplane from a point A on the ground is 60 . After aflight of 15 seconds horizontally, the angle of elevation changes to 30. If the aeroplane isflying at a speed of 200m/s, then find the constant height at which the aeroplane is flying
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