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C/m: $\frac{cos\frac{A-B}{2}}{sin\frac{C}{2}}+\frac{cos\frac{B-C}{2}}{sin\frac{A}{2}}...$


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#1 kingyo

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Posted 12-06-2012 - 20:37

C/m: $\frac{cos\frac{A-B}{2}}{sin\frac{C}{2}}+\frac{cos\frac{B-C}{2}}{sin\frac{A}{2}}+\frac{cos\frac{C-A}{2}}{sin\frac{B}{2}}\geq 6$

Edited by kingyo, 12-06-2012 - 20:42.





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