the angle of elevation of an aeroplane from a point on the ground is 60 degree .after a flight of 30 seconds,angle of elevation changes to 30 degree.if the plane is flying at a constent height of 3600root3metre.find the speed of the plane in km/h.
Answers
Answered by
4
Answer:
In 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
please mark mine as the brainliest answer
Answered by
0
Answer:
uhyugdevfyuefty
Step-by-step explanation:
Similar questions