Complex.Tan(Complex) 方法

定义

返回指定复数的正切值。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

参数

value
Complex

一个复数。A complex number.

返回

value 的正切值。The tangent of value.

示例

下面的示例演示 Tan 方法。The following example illustrates the Tan method. 它显示将 Atan 方法返回的值传递到 Tan 方法返回原始 Complex 值。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)

注解

复数的 Tan 方法对应于实数的 Math.Tan 方法。The Tan method for complex numbers corresponds to the Math.Tan method for real numbers.

Tan 方法使用以下公式来计算复数的正切 valueThe Tan method uses the following formula to calculate the tangent of the complex number value:

Sinvalue)/CosvalueSin(value) / Cos(value)

适用于

另请参阅