math

tow people begin walking from the same point at the same time. One walks due south at 3 mph and the other walks southeast at 4 mph. Approximately how far apart are the two after one hour walking?

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asked by elmemo
  1. use the law of cosines.

    x^2 = 3^2 + 4^2 - 2(3)(4) cos 45°

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    posted by Steve

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