The angle of elevation of an airplane from a point on the ground is  `60^(@)`. After  a flight
Channel: Doubtnut
Date: 12/04/2020

The angle of elevation of an airplane from a point on the ground is  `60^(@)`. After  a flight of 30 seconds, the angle of elevation becomes `30^(@)`. If the airplane is flying at a constant  height of `3000sqrt(3)`m,  find  the speed of the  airplane.