DEGREES (Transact-SQL)
Applies to: 
SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)
This function returns the corresponding angle, in degrees, for an angle specified in radians.
Transact-SQL Syntax Conventions
Syntax
DEGREES ( numeric_expression )
Note
To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation.
Arguments
numeric_expression
An expression of the exact numeric or approximate numeric data type category, except for the bit data type.
Return Code Values
Returns a value whose data type matches the data type of numeric_expression.
Examples
This example returns the number of degrees in an angle of PI/2 radians.
SELECT 'The number of degrees in PI/2 radians is: ' +
CONVERT(VARCHAR, DEGREES((PI()/2)));
GO
Here is the result set.
The number of degrees in PI/2 radians is 90
(1 row(s) affected)