Răspuns :
la liceu
teo Pitagora generalizata
BC²=AB²+AC²-2AB*AC*cos60°
BC²=36+100-2*6*10*1/2=136-60=76
BC=√76=2√19
la gimnaziu
vezi atas
teo Pitagora generalizata
BC²=AB²+AC²-2AB*AC*cos60°
BC²=36+100-2*6*10*1/2=136-60=76
BC=√76=2√19
la gimnaziu
vezi atas
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