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Oracle® OLAP Expression Syntax Reference
Release 11.2

Part Number E23381-01
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ATAN

ATAN calculates the angle value in radians of a specified tangent.

Use ATAN2 to retrieve a full-range (0 - 2 pi) numeric value indicating the arc tangent of a given ratio.

Return Value

NUMBER

Syntax

ATAN(n) 

Arguments

n is a numeric expression that contains the decimal value of a tangent.

Example

ATAN(.3) returns the value 0.291456794.