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Math Help - Finding values on triangles, please help!

  1. #1
    Junior Member
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    Sep 2008
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    41

    Finding values on triangles, please help!

    I appreciate it!
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  2. #2
    Newbie
    Joined
    Aug 2008
    Posts
    11
    Hi gobbajeezalus

    (Assuming this is a right angled triangle) all unknown angles are available to us from basic properties of triangles so

    the unknown angle on the base is 180 - 38 = 142
    from that we know the unknown angle in this triangle above is
    180 - 142 - 27 = 11
    The larger angle for the border triangle is 63 leaving the last unknown angle in the top corner as 52

    From there you just use the sine rule to find the hypotenuse of the larger triangle and you can then use pythagoras to find the value for h, basically

    sine rule
    hyp/sin 142 = 500/sin 11
    hypotenuse = 1613feet

    pythagoras
    sin 27 = h/1613
    h = 732.4 feet

    Hope thats right
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