COT (Transact-SQL)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
SQL analytics endpoint in Microsoft Fabric
Warehouse in Microsoft Fabric
A mathematical function that returns the trigonometric cotangent of the specified angle - in radians - in the specified float expression.
Transact-SQL syntax conventions
Syntax
COT ( float_expression )
Arguments
float_expression
An expression of type float, or of a type that can implicitly convert to float.
Return types
float
Examples
This example returns the COT value for the specific angle:
DECLARE @angle FLOAT;
SET @angle = 124.1332;
SELECT 'The COT of the angle is: ' + CONVERT(VARCHAR, COT(@angle));
GO
Here's the result set.
The COT of the angle is: -0.040312
(1 row(s) affected)