Question:

How do you find the missing length on a triangle when you only know 1 angle and 1 length?

by  |  earlier

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I didn't get this in school and i didn't ask the teacher so i need help with this before the new school year please help and try to make it kinda simple

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  1. Assuming it's a right triangle, that is, one of the angles is 90 degrees, you can use the law of sines to calculate the other angles and lengths.  Sine, cosine, and tangent are the ratios of the lengths of the sides for any given angle, so you can use one side to calculate the others.


  2. the missing one would be the same length as the other 2. "tri" angle :)

  3. As stated above, there are an infinite number of solutions, BUT, does it say somewhere or can you conclude somehow that it is a right triangle?  If it is, then that gives you a second angle (90 degrees) and the third angle can easily be found from that information.

    _/

  4. ok so you have a triangle and an angle well all triangles add up to 180

    u need a protractor a pencil and a compass

    draw a line like this

    ______________________________

    then at the edge put a line like this:

    _I_______________________________

    then from that line draw the line more then the measurement about 1cm more

    then put another line at the exact measurement.

    like this

    __I__________________________I________...

    put ur protractor marked x

    __X_____________________I_______

    then you draw ur angle marked O

                  O

            

    __X__________________I________

    Then draw ur line

             O

            I    

         I

       I

    I

    I

    __X_______________I__

    then put ur ruler from the point top of the rular is marked U and the and of the rular is marked P

              OP

            I    

         I

       I

    I

    I

    __X_______________U__

    then draw ur line and measure it  

  5. the problem has an infinite number of solutions

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