角A=60度 角B=X 角C=180-60-X=120-X
SIN角A:BC=SIN角B:AC=SIN角C:AB=根号3/2:2根号3=1:4
AC=4*SINX AB=SIN(120-X)*4
Y=2根号3+4*SINX+SIN(120-X)*4
0
角A=60度 角B=X 角C=180-60-X=120-X
SIN角A:BC=SIN角B:AC=SIN角C:AB=根号3/2:2根号3=1:4
AC=4*SINX AB=SIN(120-X)*4
Y=2根号3+4*SINX+SIN(120-X)*4
0