Comment #5 on issue 2949 by someb...@bluewin.ch: trig functions do not return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
A more complete routine to compute more (all) exact values for the various trig. functions is on my todo plan. I think that the table lookup currently used is not the best solution. Do you have a good algorithmic approach? As a limit on complexity we could just restrict the auto-evaluation to the ones listed at: http://en.wikipedia.org/wiki/Exact_trigonometric_constants They all appear reasonably simple and provide exact results for a wide range of angles. -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-issues@googlegroups.com. To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
