ad perpendicular pe bc ad=inaltime unghiul d=90 grade a=30 si c=60 sin60=ad/ac rd3/2=ad/6 ad=3rd3 dc²=ac²-ad² dc²=6²-(3rd3)² dc=rd36-27 dc=3 bd²=ab²-ad² bd²=8²-(3rd3)² bd=rd64-27 bd=rd37 a=B*h/2 a=8*3rd3/2 a=12rd3 p=l+l+l p=8+6+(3+rd37) p=14+3+rd37 p=17+rd37 bc=bd+dc
