Question 43249: Jan is flying a plane on a triangular course at 320 mi/hr. she flies due east for two hours and then turns right through a 65o angle. How long after turning will she be exactly southeast of where she started?
Thank You
Answer by fractalier(6550)   (Show Source):
You can put this solution on YOUR website! Yes, you will have to diagram this properly, but if you do, you will have a triangle with angles 45, 115, and 20 degrees.
Then use the law of sines...
sin 20 / 640 = sin 45 / x
from which you can find
x = 1323 mi
Divide that by 320 mph and get
time = 4.13 hours
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