ATAN Function [Numeric]

Returns the arc-tangent, in radians, of a number.

Syntax

ATAN ( numeric-expression )

Parameters

Parameters

Parameter

Description

numeric-expression

The tangent of the angle.

Returns

DOUBLE

Example

The following statement returns the value 0.479519:

SELECT ATAN( 0.52 ) FROM iq_dummy

Standards and Compatibility

  • SQL—Vendor extension to ISO/ANSI SQL grammar.

  • Sybase—Compatible with Adaptive Server Enterprise.

Parent topic: Alphabetical List of Functions
Related reference
COS Function [Numeric]
ATAN2 Function [Numeric]
ASIN Function [Numeric]
ACOS Function [Numeric]
COT Function [Numeric]
SIN Function [Numeric]
TAN Function [Numeric]