卡西欧fx-5800P程序1坐标反算(ST)Lb1 1:X1=A:Y1=BLb2 2:X2=C:Y2=DS(1-2)=:POL(C-AD-B)→S▲IF J﹥0:Then J→T:Else J360→T:If EndT=:T→DMS▲K=KIf K=1:Then Goto1:If EndIf K=2:Then Goto2:If EndIf K=3:Then C→A:D→B:Goto 2:If