CD=AC*sin60
AD=AC*cos60
S=(AC^2sin120)/2=4,5*sqrt(3)/2
CD=AC*sin60AD=AC*cos60S=(AC^2sin120)/2=4,5*корень(3)/2
CD=AC*sin60
AD=AC*cos60
S=(AC^2sin120)/2=4,5*sqrt(3)/2
CD=AC*sin60
AD=AC*cos60
S=(AC^2sin120)/2=4,5*корень(3)/2