Oracle PL/SQL/Numeric Math Functions/ATAN2

ATAN2(x, y):Returns the arctangent of x and y

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SQL> SQL> --ATAN2(x, y):Returns the arctangent of x and y. SQL> SQL> select ATAN2(1, -1) from dual; ATAN2(1,-1)

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2.35619449

SQL>

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ATAN() and ATAN2() functions are return some the arctangent

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SQL> Syntax: ATAN(<numeric expression>) ATAN2(<numeric expression1>,<numeric expression2>) SQL> SQL> SQL> SQL> SELECT ATAN(.5) AS FIRST_RESULT,

 2     ATAN2(.5,1.0) AS SECOND_RESULT
 3  FROM DUAL;

FIRST_RESULT SECOND_RESULT

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 .463647609    .463647609
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