Réponses

  • Utilisateur Brainly
2013-10-22T12:27:52+02:00
P(ABC)=AB+AC+CB

AB=6/sin(60°)=6/(√3/2)=12/√3=4√3

AC=6/sin(45°)=12/√2=6√2

BC=BH+HC
     =6/tan(60°)+6/tan(45°)
     =6/√3+6/1
     =2√3+6

donc p(ABC)=4√3+6√2+2√3+6
                  =6+6√3+6√2
                  =6(√3+1+√2)