Sdha = AD*AH*sin(A)/2 = 4*5*sin(A)/2 = 10*sin(A);
Salc = AL*AC*sin(A)/2 = 2*3*sin(A)/2 = 3*sin(A);
Salc: Sdha = 3/10
Sdha = AD*AH*sin(A)/2 = 4*5*sin(A)/2 = 10*sin(A);
Salc = AL*AC*sin(A)/2 = 2*3*sin(A)/2 = 3*sin(A);
Salc: Sdha = 3/10