ATAN

Syntax

atan::=

Text description of atan

Purpose

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.

Examples

The following example returns the arc tangent of .3:

SELECT ATAN(.3) "Arc_Tangent" FROM DUAL;

Arc_Tangent
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