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  • Nov 29, 2012, 07:10 AM
    brijmohan123456
    prove
    In triangle ABC 'a' is the side between B & C,b is the side between A & C and c is the side between A & B. prove that
    a(cosC - cosB)=(b-c)(1+ cosA)
  • Dec 1, 2012, 10:18 AM
    ebaines
    The trick to this is to use the facts that , and .

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