Răspunsuri

2014-03-30T13:52:03+03:00
Avem Δ dreptunghic ABC
m( B)= 90
tg(C)=1/2
AB= 3cm
tgC= AB/BC=> 1/2=3/BC=> BC= 6cm
AC²=BC²+ AB² => AC²= 6²+ 3² => AC²= 36+ 9=> AC²= 45 => AC =√45 => AC= 3√5
fa-mi si mie te rog si la ceallata problema vezi ca am postat