Hello, I'm running SageMath 7.2, on a 64bits laptop with a Ubuntu 16.04.2 LTS (xenial). I got a wrong answer from cos :
sage: float(cos(14*pi/9)) -0.17364817766693041 It should be positive - and it's inconsistent with the following lines : sage: float(cos(14*pi/9-2*pi)) 0.17364817766693041 sage: float(14*pi/9) 4.886921905584122 sage: float(cos(4.886921905584122)) 0.17364817766692953 Am I missing something, or is there an actual problem here ? Thanks in advance, Mickaël -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
