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Thread: Find angles of Isosceles triangle

  1. #1
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    Default Find angles of Isosceles triangle

    How do you you find the angles of a isosceles triangle when only given the sides?

    Lengths are 73, 73, 43.
    Finished B.S. Program in Radiology!!

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  2. #2
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    Default

    law of cosines ?=angle between sides a and b
    http://en.wikipedia.org/wiki/Law_of_cosines
    c^2=a^2+b^2-2*a*b*cos(?)

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