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A relationship between a chord and its respective arc
Posted:
Feb 6, 1999 4:39 PM


The relationship between a chord and its respective arc can be expressed as:
sin^1(chord / 2r) = (180*arc) / (2*PI*r)
where sin^1 is Inverse sine chord is the actual chord length r is the radius of the circle arc is the arc length
This relationship works great in an iterative solver like TLSolver where you guess at the value of r before solving.
If you need proofs, EMail me.



