COS()

A mathematical function that returns the trigonometric cosine of the specified angle - measured in radians - in the specified expression.

Signature

COS ( float_expression )

Parameters

  • float_expression — An expression of type float.

Examples

SELECT COS(14.76) AS cosCalc1, COS(-0.1472738) AS cosCalc2;
-0.58333859125687704|0.98917480131481461

Run against SQL Server 16.0.4265.3 on 2026-09-13. This is the output we got, not the documentation’s.

Available on

  • SQL Server 2017 and later
  • Azure SQL Database
  • Azure SQL Managed Instance
  • Azure Synapse Analytics
  • Analytics Platform System (PDW)
  • Microsoft Fabric warehouse
  • Fabric SQL database

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Signature and description adapted from the Microsoft SQL documentation, used under the CC BY 4.0. SQL Server and Azure are trademarks of the Microsoft group of companies. This page is not affiliated with Microsoft.