Numeric Math Functions Oracle PLSQL

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  4. ATAN() and ATAN2() functions are return some the arctangent
SQL>
Syntax:
ATAN()
ATAN2(,)
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
------------ -------------
  .463647609    .463647609