the angle of elevation of an aeroplane from a point on the ground 45 degree after 15 seconds of right triangle changes to 30° if the plane is flying at a constant height of 2500 m find the speed of the plane
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In 15 seconds it will travel 1830 m
therefore speed = 1830/15 = 122 m/s
therefore speed = 1830/15 = 122 m/s
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