syntax and example of atan2 function in oracle sql

The ATAN2 function in Oracle SQL / PLSQL is used to get arc tangent of a n and m.

Syntax for the ATAN2 function in Oracle SQL / PLSQL is:

SELECT ATAN2(N,M)
FROM table_name;

N and M are the numbers which are used to calculate the arc tangents.

Example 1:

SELECT ATAN2(0.4,0.6)
FROM DUAL;

Will return “0.588002603547568”

Example 2:

SELECT ATAN2(0,1)
 FROM DUAL;

Will return “0”

Example 3:

SELECT ATAN2(-0.4,0.4)
 FROM DUAL;

Will return “-0.785398163397448”

Example 4:

SELECT ATAN2(-0.4,-0.4)
 FROM DUAL;

Will return “-2.35619449019234”