Policies & Guidelines

ATAN

Calculate arctangent

Description

Calculates the inverse tangent or arctangent of the given number. The value is returned in radians.

Function signature

ATAN(number: Number) => Number

Parameter

Description

Number

Number to calculate arctangent for

Examples

Formula

Return value

ATAN(-1)

-0.78539816

ATAN(0)

0

ATAN(0.5)

0.46364761