Question

Unum
9. The angle of elevation of an aeroplane from a point A on the ground is 60°. After a flight of 15
seconds, the angle of elevation changes to 30°. If the aeroplane is flying at a constant height of 1500
13 m, find the speed of the plane in km/hr.
10. Two ships are there in the sea on either side of a light house in such a way that the ships and the light​

Answer 1

Answer:

Sorry I didn't know this answer sorry very much forgive me