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    jessilovin's Avatar
    jessilovin Posts: 1, Reputation: 1
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    #1

    Jul 14, 2008, 02:16 PM
    Applied Trigonometry
    An airplane flying at a speed of 360 mi/hr flies from a point A in the direction 137 degrees for 30 minutes and then flies in the direction 227 degrees for 45 minutes. Approximate, to the nearest mile, the distance from the airplane to A.
    shw3nn's Avatar
    shw3nn Posts: 17, Reputation: 2
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    #2

    Jul 14, 2008, 02:27 PM
    distance = rate * time

    You can figure out the distances traveled. You've been given a couple of angles. Draw a picture. You've got a triangle on your hands, here. It's not just any triangle. It's one of the best kinds of triangles. Just draw it.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Jul 15, 2008, 04:43 AM
    Hey, but it's easier because of the 90 degrees! It's now that I realise that! Thanks galactus! I wouldn't have know that if you didn't get into this useless cosine rule for that problem. ;)
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