atan

Type

function

Summary

Returns the arc tangent of a number in radians.

Syntax

the atan of <number>

atan(<number>)

Description

Use the atan function to find the arc tangent of a number.

The arc tangent of number is an angle whose tangent is equal to number. In other words, atan is an inverse of the tan function.

If a math operation on finite inputs produces a non-finite output, an execution error is thrown. See math operations for more information.

Parameters

Name	Type	Description
number		A positive or negative number, or an expression that evaluates to a number.

Examples

atan(0)
atan(tan(-1))

the atan of vectorMagnitude

Value

Name	Type	Description
return		The atan function returns a number between -pi/2 and pi/2.
the result		The result of the atan function is returned in radians. To get this result in degrees, use the following custom function: function atanInDegrees pMagnitude return atan(pMagnitude) * 180 / pi end atanInDegrees

Related

constant: pi

control structure: function

function: tan

glossary: radian, custom function, return, degree, math operation

keyword: inverse

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile