Răspuns :
m∡C=180-60-90=30°
sin30=AB/BC
1/2=AB/6
AB=6/2=3
AC²=6²-3²=36-9=27
AC=√27=3√3
A=3√3*3/2=9√3/2=4,5√3
sin30=AB/BC
1/2=AB/6
AB=6/2=3
AC²=6²-3²=36-9=27
AC=√27=3√3
A=3√3*3/2=9√3/2=4,5√3