已知弓形的弦长为L=11.弧长C=12.求弓形的高H设弧半径为R则：Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*RnRn+1=(1+(11-2*Rn*SIN(12/(2*Rn)))/(11-12*COS(12/(2*Rn))))*RnRn+1=(1+(11-2*Rn*SIN(6/Rn))/(11...