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    length of triangle side

    0  Views: 585 Answers: 2 Posted: 12 years ago

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    <font face="Verdana, Arial, Helvetica, 'sans serif'">A right triangle has two sides perpendicular to each other. Side "a" and "b" are the perpendicular sides and side "c" is the hypotenuse (the long side).</font>


    ""


    Example:  If side A = 6 and side B = 8, what is side C?


    Formula:   a^2 + b^2 =  c^2


                        36  +  64  =  c^2


                             100      =  c^2


      You take the square root of 100 to get c^2


    c = 10


    Check problem:    a^2  +  b^2  =  c^2


                                      6^2  +  8^2  =  10^2


                                        36  +   64  =  100


                                             100       =  100


    Example:  If side A = 4 and the hypotenuse is given, C = 25, what is side B?


                             a^2 + b^2 = c^2


                              16  + b^2 = 25


                              16 - 16 + b^2 = 25 - 16


                                               b^2  =  9


    You take the square root of 9 to get b^2.


    b = 3              

    Flip

    What if it is not a right triangle?
    chelleanne

    If an angle is change in a triangle the hypotenuse could be any number. You would need more information. You can use the Law of Cosines or the Law of Sines.
    Click > http://www.sparknotes.com/testprep/books/sat2/math2c/chapter9section9.rhtml

    Let's try this...get out your ruler. Good. now measure the line. Good. There you go, you've got your answer!


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