Dear list, how would you calculate with an expression this formula: arctg(y/x) looks like tan, sin, cos cannot be in the expression, does it mean I have to brake it into parts? Best, Popesz -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20200202/7295aeb6/attachment.html>