Răspunsuri

2014-04-12T17:46:46+03:00
CosC=√3/2; cos(√3/2)=30 grade=> m( m(BC=AC/cosB=18√3/√2/2=18√6 cosC=AB/BC=>AB=BC*cosC=18√6*√3/2=18√18/2=9√18=27√2 Perimetrul: AB+BC+AC= 18√3+18√6+27√2=9(2√3+2√6+3√2)