Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*Rn
取R0,代入上式,得R1
取R1,代入上式,得R2
取R2,代入上式,得R3
.
直到Rn与Rn+1很接近即得R=Rn
弧长900,弦长885;
R0=1500
R1=1407.095
R2=1419.189
R3=1419.453
R3=1419.453
R=1419.453
弧长913,弦长900;
R0=1500
R1=1553.274
R2=1558.423
R3=1558.466
R4=1558.466
R=1558.466
弧长930,弦长900;
R0=1000
R1=1045.885
R2=1051.724
R3=1051.806
R4=1051.806
R=1051.806
弧长918,弦长900;
R0=1000
R1=1180.433
R2=1296.279
R3=1331.664
R4=1334.237
R5=1334.25
R6=1334.25
R=1334.25
弧长932,弦长900;
R0=1000
R1=1020.292
R2=1021.366
R3=1021.369
R4=1021.369
R=1021.369