| 1 | initial version |
FWIW, maxima does have a routine "trigrat" that simplifies the expression to 0. It just doesn't seem to be tried by default from sage at present:
sage: res = (-1/2*sin(1/16*pi)* ...
sage: maxima_calculus(A).trigrat()
0
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.