Question

the angle of elevation of a jet plane from a point on the ground is 60 degree after a flight of 30 seconds the angle of elevation changes to 30 degree is a jet plane is flying at a constant height 3600
$\sqrt{3}$
find the speed of the jet plane​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

n triangle ACE,

CE = 10800 m

AC = BD =

In triangle BED,

CD + DE = CE

CD + 3600 = 10800

CD = 10800 - 3600 = 7200 m

Distance travelled = 7200 m

Time taken = 30 seconds

In 1 second = 240 m

In 3600 seconds (1 hour) = 240 × 3600 = 864000 m = 864 km

In hour = 864 km

Speed = 864 km/h