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Nathan and Julia are walking along lines that form a 38 degree angle. If Nathan walks at 3.6 miles per hour and Julia walks at 4.1 miles per hour, how far apart will they be after 2 hours?

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  1. Use law of cosines:

    c^2=a^2 +b^2 -2abcosC

    C=38deg
    a=3.6*2
    b=4.1*2

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  2. Thank you Bob, your awesome :D

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