弧长C=1662,弦长L=1570,求弓高H是多少?弧半径为R,弧所对的圆心角为A.Rn+1=(1+(L-2*Rn*SIN(C/(2*Rn)))/(L-C*COS(C/(2*Rn))))*RnR0=1500R1=1420.69R2=1429.67R3=1429.81R4=1429.81R=1429.81A=C/R=1662/1429.81=1.16239...