CMO (Canadian Mathematic Olympiad) 1969, #5
Today's question is "In triangle ABC, CD is the bisector of the angle ACB, prove that (2ab x cos(c/2))/(a+b)=d"-- CMO 1969, #5
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The Questions Anna Came Across
I am 14 and I hope I can help more people with math and I hope more people like math!!
Anna Muyan Li