Question 433273: If two people were traveling, one due East and 40 mph and one NorthEast and 30 mph, how far would they be apart after 2 hours? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Assuming northeast is 045 degrees:
Use the Cosine Law.
a = 80 miles, b = 60 miles and the included angle = 45 degs
d^2 = 80^2 + 60^2 - 2*80*60*cos(45)
d^2 = 10000 - 9600*sqrt(2)/2
d^2 =~ 3211.77
d =~56.67 miles
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The distance between them at any time t, t in hours, is miles
