已知弦长L=11.85,弧长C=12.1,求半径R?
Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*Rn
R0=15
R1=16.569
R2=17.086
R3=17.129
R4=17.129
R=17.129弦长11.5,弧长11.8呢已知弦长L=11.5,弧长C=11.8，求半径R?Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*RnR0=15R1=15.048R2=15.048R=15.048