# Complex.Asin(Complex) メソッド

## 定義

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

value
Complex

#### 戻り値

Complex

`value` のアーク サインである角度。The angle which is the arc sine of `value`.

## 例

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

public class Example
{
public static void Main()
{
Complex[] values = { new Complex(2.3, 1.4),
new Complex(-2.3, 1.4),
new Complex(-2.3, -1.4),
new Complex(2.3, -1.4) };
foreach (Complex value in values)
Console.WriteLine("Sin(Asin({0})) = {1}",
value, Complex.Sin(Complex.Asin(value)));
}
}
// The example displays the following output:
//       Sin(Asin((2.3, 1.4))) = (2.3, 1.4)
//       Sin(Asin((-2.3, 1.4))) = (-2.3, 1.4)
//       Sin(Asin((-2.3, -1.4))) = (-2.3, -1.4)
//       Sin(Asin((2.3, -1.4))) = (2.3, -1.4)
``````
``````Imports System.Numerics

Module Example
Public Sub Main()
Dim values() As Complex = { New Complex(2.3, 1.4),
New Complex(-2.3, 1.4),
New Complex(-2.3, -1.4),
New Complex(2.3, -1.4) }
For Each value As Complex In values
Console.WriteLine("Sin(Asin({0})) = {1}",
value, Complex.Sin(Complex.Asin(value)))
Next
End Sub
End Module
' The example displays the following output:
'       Sin(Asin((2.3, 1.4))) = (2.3, 1.4)
'       Sin(Asin((-2.3, 1.4))) = (-2.3, 1.4)
'       Sin(Asin((-2.3, -1.4))) = (-2.3, -1.4)
'       Sin(Asin((2.3, -1.4))) = (2.3, -1.4)
``````

## 注釈

この Asin メソッドは、次の式を使用します。The Asin method uses the following formula:

-ImaginaryOne * Log( ImaginaryOne * 値 + Sqrt ( One -value * 値))-ImaginaryOne * Log(ImaginaryOne * value + Sqrt(One - value * value))