Question

The angle of elevation of an aeroplane , observed from a point on the ground
is 60 0

. After a flight of 20 seconds , the angle of elevation becomes 30 0
. If
the aeroplane is flying at a constant speed and at a constant height of
1500 3 metres , find the speed of the aeroplane in kilometre per hour

Answer 1

Step-by-step explanation:

Hope it helps you...

Plss dont mind my mistakes ...