Calculates the inverse tangent of the argument.

Syntax

ArcTan(Number)

The syntax of the ArcTan function consists of the following parts:

Remarks

The result has the same structure as the argument Number. The calculation is done element by element where appropriate.

The result has the unit rad, if Number has a unit. Otherwise, it has no unit.

The real inverse tangent function is calculated for a real argument. The result is of the 64-bit floating point value data type. The following illustration shows the course of the function in this interval:

If Number is complex, then the complex inverse tangent function is calculated, which can be defined as follows:

i / 2 * (Log(1 - i * Number) - Log(1 + i * Number)) with the imaginary unit i = (0, 1).

The result is of the complex 64-bit floating point value data type. The following illustration shows the course of the absolute value of the function:

If the argument is a list, then the function is executed for each element of the list and the result is also a list.

Available in

FlexPro Basic, Professional, Developer Suite

Examples

See Also

ArcCos Function

ArcSin Function

ArcTan2 Function

Cos Function

CosHyp Function

Sin Function

SinHyp Function

Tan Function

TanHyp Function