Question

弧长为1800和弧长到弦顶的距离为275,求弧度是多少怎么算

Answer 1

弧长为C=1800和弦到弧顶的距离为H=275,求圆心角A是多少弧度?

弧半径为R.

Rn+1=(1-(Rn*COS(C/(2*Rn))-Rn+H)/((C/2)*SIN(C/(2*Rn))-H))*Rn

R0=1400

R1=1423.6

R2=1424.38

R3=1424.38

R=1424.38

A=C/R

=1800/1424.38

=1.26371弧度