C＃| Math.Tanh()方法

Math.Tanh()是内置的Math类方法，该方法返回给定双值参数的双曲正切。如果给定的参数为NaN，则结果为NaN。

句法：

public static double Tanh(double num)

范围：

num: It is the number whose hyperbolic tan is to be returned and type of this parameter is System.Double.

返回值：该方法返回num的双曲正切。类型System.Double 。如果num等于NegativeInfinity，则此方法返回-1。如果num等于PositiveInfinity，则此方法返回1。如果num等于NaN，则此方法返回NaN。

例子 ：

Input  : num = 60.0
Output : 1.0

下面的程序说明了Math.Tanh()方法：

程序1：

// C# program to illustrate the
// Math.Tanh()
using System;
  
class GFG {
  
    // Main Method
    public static void Main(String[] args)
    {
  
        double num1 = 60.0, num2 = 0.0, num3 = 1.0;
  
        // It returns the hyperbolic tan of 
        // specified  angle in radian
        double tanhvalue = Math.Tanh(num1);
        Console.WriteLine("The tanh of num1 = " + tanhvalue);
  
        tanhvalue = Math.Tanh(num2);
        Console.WriteLine("The tanh of num2 = " + tanhvalue);
  
        tanhvalue = Math.Tanh(num3);
        Console.WriteLine("The tanh of num3 = " + tanhvalue);
    }
}

输出：

The tanh of num1 = 1
The tanh of num2 = 0
The tanh of num3 = 0.761594155955765

程式2：

// C# praogram to illustrate the
// Math.Tanh() Method
using System;
  
class GFG {
     
    // Main Method
    public static void Main(String[] args)
    {
  
        double num1 = (30 * (Math.PI)) / 180, num2 = 11.0, num3 = 45.0;
  
        // It returns the hyperbolic tan of 
        // angle in radian
        double tanhvalue = Math.Tanh(num1);
        Console.WriteLine("The tanh of num1 = " + tanhvalue);
  
        tanhvalue = Math.Tanh(num2);
        Console.WriteLine("The tanh of num2 = " + tanhvalue);
  
        tanhvalue = Math.Tanh(num3);
        Console.WriteLine("The tanh of num3 = " + tanhvalue);
    }
}

输出：

The tanh of num1 = 0.480472778156452
The tanh of num2 = 0.999999999442106
The tanh of num3 = 1