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Math Help - Right-Angled Triangles...

  1. #1
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    Post Right-Angled Triangles...

    Hi,
    I have posted here because I need some assistance with a trigonometry problem. I have found out that the answer is 11.2 to one decimal place but I can not work out how to do it.

    The problem: http://i42.tinypic.com/1217mgg.jpg

    Thank you.
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  2. #2
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    Quote Originally Posted by MathematicalThinker10 View Post
    Hi,
    I have posted here because I need some assistance with a trigonometry problem. I have found out that the answer is 11.2 to one decimal place but I can not work out how to do it.

    The problem: http://i42.tinypic.com/1217mgg.jpg

    Thank you.
    tan18 = BD/28
    So BD = 28*tan(18)
    tan36 = BC/28
    So BC = 28tan(36)
    x = BC - BD = ...?
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  3. #3
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    Thank you.
    I did not realize it was so simple...
    Last edited by MathematicalThinker10; May 3rd 2010 at 06:36 AM.
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  4. #4
    Junior Member mrmohamed's Avatar
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    Quote Originally Posted by MathematicalThinker10 View Post
    Hi,
    I have posted here because I need some assistance with a trigonometry problem. I have found out that the answer is 11.2 to one decimal place but I can not work out how to do it.

    The problem: http://i42.tinypic.com/1217mgg.jpg

    Thank you.
    HI all
    aother solution

    mrmohamed
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