Oracle9i SQL Reference Release 1 (9.0.1) Part Number A90125-01 |
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Functions, 9 of 166
atan::=
atan
ATAN
returns the arc tangent of n. Inputs are in an unbounded range, and outputs are 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
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