# Complex.Asin(Complex) Méthode

## Définition

Retourne l'angle qui correspond au sinus d'arc du nombre complexe spécifié.Returns the angle that is the arc sine of the specified complex number.

``````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``

#### Paramètres

value
Complex

Nombre complexe.A complex number.

#### Retours

Angle qui correspond au sinus d'arc de `value`.The angle which is the arc sine of `value`.

## Exemples

L’exemple suivant illustre la méthode Asin.The following example illustrates the Asin method. Elle indique que le passage de la valeur retournée par la méthode Asin à la méthode Sin retourne la valeur de Complex d’origine.It shows that passing the value returned by the Asin method to the Sin method returns the original Complex value.

``````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)
``````

## Remarques

La méthode Asin pour les nombres complexes correspond à la méthode Math.Asin pour les nombres réels.The Asin method for complex numbers corresponds to the Math.Asin method for real numbers.

La méthode Asin utilise la formule suivante :The Asin method uses the following formula:

-ImaginaryOne * Log(ImaginaryOne * valeur + Sqrt(valeurOne *))-ImaginaryOne * Log(ImaginaryOne * value + Sqrt(One - value * value))