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Date: Tue, 12 Nov 1996 21:02:35 +0100
From: Ania Majkowska
Hi !
I have a problem. Is it possible to prove this statement?
sin(A)*sin(B)/sin(C/2)*sin(C/2)+
sin(A)*sin(C)/sin(B/2)*sin(B/2)+
sin(B)*sin(C)/sin(A/2)*sin(A/2)>=9
if A,B,C are the angles of a triangle.
Anna
Copyright © 1996-2008 Alexander Bogomolny
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