# Complex.Atan(Complex) 方法

## 定义

``````public:
static System::Numerics::Complex Atan(System::Numerics::Complex value);``````
``public static System.Numerics.Complex Atan (System.Numerics.Complex value);``
``static member Atan : System.Numerics.Complex -> System.Numerics.Complex``
``Public Shared Function Atan (value As Complex) As Complex``

value
Complex

## 示例

``````using System;
using System.Numerics;

public class Example
{
public static void Main()
{
Complex[] values = { new Complex(2.5, 1.5),
new Complex(2.5, -1.5),
new Complex(-2.5, 1.5),
new Complex(-2.5, -1.5) };
foreach (Complex value in values)
Console.WriteLine("Tan(Atan({0})) = {1}",
value, Complex.Tan(Complex.Atan(value)));
}
}
// The example displays the following output:
//       Tan(Atan((2.5, 1.5))) = (2.5, 1.5)
//       Tan(Atan((2.5, -1.5))) = (2.5, -1.5)
//       Tan(Atan((-2.5, 1.5))) = (-2.5, 1.5)
//       Tan(Atan((-2.5, -1.5))) = (-2.5, -1.5)
``````
``````Imports System.Numerics

Module Example
Public Sub Main()
Dim values() As Complex = { New Complex(2.5, 1.5),
New Complex(2.5, -1.5),
New Complex(-2.5, 1.5),
New Complex(-2.5, -1.5) }
For Each value As Complex In values
Console.WriteLine("Tan(Atan({0})) = {1}",
value, Complex.Tan(Complex.Atan(value)))
Next
End Sub
End Module
' The example displays the following example:
'       Tan(Atan((2.5, 1.5))) = (2.5, 1.5)
'       Tan(Atan((2.5, -1.5))) = (2.5, -1.5)
'       Tan(Atan((-2.5, 1.5))) = (-2.5, 1.5)
'       Tan(Atan((-2.5, -1.5))) = (-2.5, -1.5)
``````

## 注解

Atan 方法使用以下公式：The Atan method uses the following formula:

ImaginaryOne/new Complex （2.0，0.0）） * （LogOne - ImaginaryOne * 值）-LogOne + ImaginaryOne * 值））(ImaginaryOne / new Complex(2.0, 0.0)) * (Log(One - ImaginaryOne * value) - Log(One + ImaginaryOne * value))