| ATAN2 |
ATAN2(n,m) |
Returns the
arc tangent of the value n/m. In other words
ATAN2(n,m) is the same as
ATAN(n/m). The result is an
angle expressed in radians, which will fall inclusively in the range
-
/2 and 
/2.
Example
SQL> SELECT ATAN2(.4,2), ATAN(.2) 2 FROM dual; ATAN2(.4,2) ATAN(.2) ----------- ---------- .19739556 .19739556
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