Raspuns:
Explicație pas cu pas:
A=AB×CM/2
40 rad 3=16×CM/2
CM=80 rad 3/16=5 rad 3
dacă m(<A)=60° atunci sin 60°=rad 3/2
AC=5 rad 3/AC=rad 3/2 AC=1
AM=rad [10^2-(5 rad 3)^2]=rad(100-75)= rad 25=5
MB=16-5=11
BC=rad[11^2+(5 rad 3)^2]=rad(121+75)=rad 196=14
A=BC×AD/2
40 rad 3=14×AD/2
AD=80 rad 3/14=(40 rad 3)/7=5,(714285) rad 3
rad=radical
/=linie de fractie
^=la putere