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The angle of elevation of an aeroplane f...

The angle of elevation of an aeroplane from a point on the ground is `60^(@)`. After flying for 15 seconds, the elevation changes to `30^(@)`. If the aeroplane is flying at a speed of 720 kmph, then find the constant height at which aeroplane is flying. `" [take "sqrt(3)=1.732]`

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The correct Answer is:
2598 m
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