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EdaAna
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EdaAna
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Please I need to solve this exercice :
Please I need to solve this exercice :
Prove that in any triangular" (ABC) is true the equalisation :
sinA +sinB + sinC=4 cos (A/2) cos(B/2) cos (C/2)
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EdaAna
Dec 14, 2014
+4 
