Răspunsuri

2014-05-27T10:00:35+03:00
Tg 30*=cat .opusa/cat alaturata
√3/3=AC/12
AC=4√3
sin B=sin 30*=1/2
sinB=AC/BC
1/2=4√3/BC
CB=8√3
P=AB+AC+BC=8√3+4√3+12=12√3+12=12(1+√3)