id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
20752 Wrong simplification in symbolic trigonometry involving fractions tmonteil "As reported in [http://ask.sagemath.org/question/33623/bug-in-cos-function-in-version-72/?answer=33624#post-id-33624 this ask question], Sage makes wrong simplifications in symbolic trigonometry involving fractions:
{{{
sage: cos(pi+pi*1/42)
cos(1/42*pi)
}}}
While it should be `-cos(1/42*pi)`.
" defect closed major sage-duplicate/invalid/wontfix symbolics wontfix rws N/A