OMTEX CLASSES: The angle of elevation of an aeroplane from a point A on the ground is 60 degree. After a flight of 15 seconds horizontally, the angle of elevation changes to 30 degree. If the aeroplane is flying at a speed of 200 m/s, then find the constant height at which the aeroplane is flying.

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