Oracle9i SQL Reference Release 2 (9.2) Part Number A96540-02 |
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atan::=
ATAN
returns the arc tangent of n
. The argument n
can be in an unbounded range, and the function returns values in the range of -pi/2 to pi/2 and are expressed in radians.
The following example returns the arc tangent of .3:
SELECT ATAN(.3) "Arc_Tangent" FROM DUAL; Arc_Tangent ---------- .291456794