Question

aeroplane flying horizontally 1000m above the ground is observed at an angle of elevation 60 degree from a point on the ground after a flight of 10 seconds the angle of elevation of the point of observation changes to 30 degree find the speed of the plane in m/s​

Answer 1

Step-by-step explanation:

I hope this helps you !

The first picture is the diagram of your question and second diagram is solution for your question.