ATAN
The ATAN function returns the arctan of the input argument; that is, the angle (in radians) whose tangent is x.
Syntax
ATAN (x)
Remarks
The table lists the valid input argument data types and the resulting output data types.
Data Type of Argument | Output Type | Notes |
BIGINT, DECIMAL, FLOAT, INTEGER, NUMERIC, REAL, SMALLINT, TINYINT | FLOAT | The input value can range from -pi/2 to pi/2, inclusive.
Output value is in radians. |
NULL | NULL | |
Example
SELECT ATAN(0.57735026919);
The result is 0.5235987755982989 radians, which is 30 degrees.