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    visha07's Avatar
    visha07 Posts: 1, Reputation: 1
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    #1

    Nov 30, 2008, 01:16 PM
    Trigonometry queston
    From A Emma cycles 4 miles NE to B, then 6 miles NW to C. Find angle BAC
    Sitkadiver's Avatar
    Sitkadiver Posts: 26, Reputation: 3
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    #2

    Nov 30, 2008, 01:20 PM

    This is a 3-4-5 right angle and angle abc is the 90.
    v1033's Avatar
    v1033 Posts: 44, Reputation: 3
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    #3

    Nov 30, 2008, 02:32 PM

    Have you drawn a diagram?
    Sitkadiver is correct, if you travel NE then NW the angle you make is 90 degrees (a right angle)
    The question has given you the magnitude of the opposite and adjacent sides. You just need to pick the right relationship from SOHCAHTOA to find the angle.
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