The ATAN function in Oracle SQL / PLSQL is used to get arc tangent of a number.
Syntax for the ATAN function in Oracle SQL / PLSQL is:
SELECT ATAN(N)
FROM table;
N is the number whose arc tangent is to be determined.
Example 1:
SELECT ATAN(0.4) FROM DUAL;
Will return “0.380506377112365”
Example 2:
SELECT ATAN(0) FROM DUAL;
Will return “0”
Example 3:
SELECT ATAN(-0.4) FROM DUAL;
Will return “-0.380506377112365”