Name: atan

Type: function

Syntax: the atan of <number>

Syntax: atan(<number>)

Summary:

<return|Returns> the arc tangent of a number in <radian|radians>.

Introduced: 1.0

OS: mac, windows, linux, ios, android

Platforms: desktop, server, mobile

Example:

atan(0)

atan(tan(-1))

Example:

the atan of vectorMagnitude

Parameters:

number:

A positive or negative number, or an expression that evaluates to a

number.

Returns:

The <atan> <function> <return|returns> a number between -pi/2 and pi/2.

The result:

The result of the <atan> function is <return|returned> in

<radian|radians>. To get this result in <degree|degrees>, use the

following <custom function>:

function atanInDegrees pMagnitude

return atan(pMagnitude) * 180 / pi

end atanInDegrees

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 operation|math operations> for more

information.

References: pi (constant), function (control structure), tan (function),

radian (glossary), custom function (glossary), return (glossary),

degree (glossary), inverse (keyword), math operation (glossary)

Tags: math