assay
math-longtail

cos-negative-symmetric

Subject
COS
Category
value
Formula
=COS(-PI())
Canonical
-1

Per-engine results

matches canonical diverges no fixture

Engine Verdict Value
gsheets match -1
excel match -1
lattice match -1
ironcalc match -1
hyperformula match -1
libreoffice diverge
formulas match -1
pycel diverge #NAME?