Dear sage-support, I'm getting the following unexpected results:
sage: cos(2*pi*4/7).n() 0.900968867902419 sage: cos((2*pi*4/7).n()) -0.900968867902419 What is going on here? Clearly the result should be negative both times. Thanks, Shaun Ault -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
