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calculati aria ∆abc daca:AB=6cm,AC=10cm,si m^a=30°

Răspuns :

[tex]A_{\Delta}=\frac{AB\cdot{AC}\cdot{sin}30^0}{2}=\frac{6\cdot10\cdot\frac{1}{2}}{2}=15(cm^2) [/tex]