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Math Help - Worded Trig Problem

  1. #1
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    Nov 2010
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    Worded Trig Problem

    I am studying for my exams but there is this question i just cannot intrepet. If you can solve this, that would be great!

    Rachel uses a protractor and pen to measure the angle of elevation from her eye level to the top of a billboard 25m away. She obtains a value of 42 degrees. She also measures the distance from the ground to her eye level and finds it to be 153cm. Find the hight of the billboard to the nearest metre.

    The answer is 24m. I cannot get the right answer
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  2. #2
    MHF Contributor Unknown008's Avatar
    Joined
    May 2010
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    Mauritius
    Posts
    1,260
    Make a sketch.

    Using this sketch, can you solve it?



    Use trigonometry to find the height.

    Post what you get!
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