SOLUTION: Two trains leave a station on different tracks. The tracks make an angle of 120 degree with the as vertex. The first train travels at an average speed of 100km/hr. and the second t
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Question 678685: Two trains leave a station on different tracks. The tracks make an angle of 120 degree with the as vertex. The first train travels at an average speed of 100km/hr. and the second train travels at an average of 65km/hr. How far apart are the trains after 2 hours?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
The first train traveling at an average speed of 100km/hr for 2 hours, covers a distance (in km) of
.
The second train traveling at an average speed of 85km/hr for 2 hours, covers a distance (in km) of
.
The Law of Cosines says that in triangle ABC
So we can calculate the distance between the two trains after 2 hours (side of the triangle.
(approx.)
The trains are km apart after 2 hours
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