Talk:Toroidal coordinates

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[edit] Include conversion from cartesian coordinates to toroidal?

The subject says it all really. Skytopia (talk) 08:53, 31 December 2007 (UTC)

Looks as though it has been updated - cheers to whoever it was. However, there may be a slight error in the "Inverse Transformation" section. Please see this page to confirm that Wikipedia's "cos(sigma) = (-d1^2 - d2^2 + 4*a^2)/(2*d1*d2)" is not correct.

I also recommend using ACOS on the right hand side of the equation, instead of COS on the left hand side. --Skytopia (talk) 04:25, 27 February 2008 (UTC)