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Math Help - Calculating the angles of the following triangle

  1. #1
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    Calculating the angles of the following triangle

    Hello, im stuck on finding the angles in the following triangle in order to find the resultant forces.

    I have this traingle; http://img293.imageshack.us/img293/8215/questione.png

    which i want to find out all the angles for. I know that the following is;
    Rx = 153.2
    Ry = 128.56
    Here is the angles my teacher found... somehow;
    http://img812.imageshack.us/img812/2723/solutions.png

    ive tried using the cosine rule, in combination with the resultant x and y forces, but it didnt work

    any tips?
    Thanks allot
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  2. #2
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    Quote Originally Posted by stevemilw View Post
    Hello, im stuck on finding the angles in the following triangle in order to find the resultant forces.

    I have this traingle;

    which i want to find out all the angles for. I know that the following is;
    Rx = 153.2
    Ry = 128.56
    Here is the angles my teacher found... somehow;


    ive tried using the cosine rule, in combination with the resultant x and y forces, but it didnt work

    any tips?
    Thanks allot
    ...
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  3. #3
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    thanks, the angles are in the diagram to the right
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