Syntax

COS(angle)

Arguments

The printed syntax lists 1 argument(s), in order:

  • angle

“optional” marks an argument Google prints in square brackets; “repeatable” marks one Google prints with “…”.

Description from Google Docs Editors Help

“Returns the cosine of an angle provided in radians.”

Google’s help article for COS →

Source: Google Docs Editors Help, “Google Sheets function list” (support.google.com/docs/table/25273), record record 199 of 516, data fetched 28 September 2026. Data month: September 2026.