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Thread: inequality and sides of triangles

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    inequality and sides of triangles

    If alb,c are sides a triangle, then prove

    Mahan Ghobadi

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  2. #2
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    Re: inequality and sides of triangles

    This is what I got:
    the first inequality:



    adding all of them together we get:





    therefore,



    the second inequality:

    by triangle inequality we have:



    by squaring both sides, we get :







    adding them up:





    by adding

    we get,

    Mahan Ghobadi

    Maths Tutor- ESL (80)| 2 Unit maths (96)(2013) | 3 Unit maths (99)| 4 Unit maths(95)| Physics (88)| music1(93)

    Get more answers for your questions, as well as weekly tips and blog posts, from my friends and I at:
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