leslychavez0269
18.01.2020 •
Mathematics
Aman is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an angle of elevation 300. after exactly one minute, the radar sweep reveals that the plane is now at an angle of elevation 600 maintaining the same altitude. what is the speed in m/s of the plane?
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Ответ:
The speed in of the plane is 115.47 m/sec
Step-by-step explanation:
Given:
Height at which the plane is flying = 6000 m
Angle of elevation at the radar base = 30 Degrees
Angle of elevation at the radar base after one minute = 60 Degrees
To Find:
The Speed of the plane in meter per second = ?
Solution:
Let us use the tangent of the angle to find the distance (d) to a point directly below plane:
when the angle is 30 degrees
d1 = 10392.3 meters
when the angle is 60 degrees
d2 = 3464.1 meters
distance travelled by aircraft in 1 min is
=>d1 - d2
=>0392.3 - 3464.1
= 6928.2 m/min
Now converting to m/sec
=>
=>115.47 m/sec
Ответ:
false.No
Step-by-step explanation:
15x+18y=16
(8,2)
15(8)+18(2)=16
120+36=16
156=16
false