# Complex.Tan(Complex) Metodo

## Definizione

Restituisce la tangente del numero complesso specificato.Returns the tangent of the specified complex number.

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

#### Parametri

value
Complex

Numero complesso.A complex number.

#### Restituisce

Tangente di `value`.The tangent of `value`.

## Esempi

Nell'esempio seguente viene illustrato il metodo Tan.The following example illustrates the Tan method. Indica che il passaggio del valore restituito dal metodo Atan al metodo Tan restituisce il valore di Complex originale.It shows that passing the value returned by the Atan method to the Tan method returns the original Complex value.

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

## Commenti

Il metodo Tan per i numeri complessi corrisponde al metodo Math.Tan per i numeri reali.The Tan method for complex numbers corresponds to the Math.Tan method for real numbers.

Il metodo Tan usa la formula seguente per calcolare la tangente del numero complesso `value`:The Tan method uses the following formula to calculate the tangent of the complex number `value`:

Sin(`value`)/Cos(`value`)Sin(`value`) / Cos(`value`)