Two factories blow their whistles at exactly the same time. If a man hears the two blasts exactly 4.2 seconds and 5.9 seconds after they are blown and the angle between his lines of sight to the two
factories is 40.8°, how far apart are the factories? Give your result to the nearest meter. (Use the fact
that sound travels at 344 m/sec.)
A) 2903 meters
B) 3263 meters C) 1329 meters D) 1997 meters