PostgreSQL ATAN() function

ATAN() function

The PostgreSQL atan() function is used to return the inverse tangent of a given argument.

Uses of ATAN() Function

• Trigonometric Calculations: Calculate the arc tangent value of a number.


• Geometry: Determine angles in geometric computations.


• Engineering Applications: Perform calculations involving angles and trigonometric functions.


• Scientific Research: Analyze data involving trigonometric relationships and functions.

Syntax:

atan(a)

PostgreSQL Version: 9.3

Pictorial presentation of PostgreSQL ATAN() function

Example 1: PostgreSQL ATAN() function

Code:

SELECT ATAN(0) AS "Atan (0)";

Sample Output:

 Atan (0)
----------
        0
(1 row)

Example 2: PostgreSQL ATAN() function

Code:

SELECT ATAN(1) AS "Atan (1)";

Sample Output:

     Atan (1)
-------------------
 0.785398163397448
(1 row)

Example 3: PostgreSQL ATAN() function

Code:

SELECT ATAN(2) AS "Atan (2)";

Sample Output:

     Atan (2)
------------------
 1.10714871779409
(1 row)

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