C# Math.Tan()用法及代碼示例

Math.Tan()是內置的Math類方法，該方法返回給定雙值參數(指定角度)的切線。

用法:

public static double Tan(double num)

參數：

num:要返回其切線的角度(以弧度為單位)，此參數的類型為System.Double。

返回值：返回類型為System.Double的num的切線。如果num等於NegativeInfinity，PositiveInfinity或NaN，則此方法返回NaN。

下麵的程序來說明Math.Tan()方法。

示例1:演示Math.Tan()方法的用法。

// C# program to demonstrate working 
// Math.Tan() method 
using System; 
   
class Geeks { 
   
    // Main Method 
    public static void Main(String []args) 
    { 
        double a = 12; 
           
        // converting value to radians 
        double b = (a * (Math.PI)) / 180; 
   
        // using method and displaying result 
        Console.WriteLine(Math.Tan(b)); 
        a = 63; 
           
        // converting value to radians 
        b = (a * (Math.PI)) / 180; 
   
        // using method and displaying result 
        Console.WriteLine(Math.Tan(b)); 
        a = 187; 
           
        // converting value to radians 
        b = (a * (Math.PI)) / 180; 
  
        // using method and displaying result 
        Console.WriteLine(Math.Tan(b)); 
        a = 45; 
           
        // converting value to radians 
        b = (a * (Math.PI)) / 180; 
   
        // using method and displaying result 
        Console.WriteLine(Math.Tan(b)); 
    } 
}

輸出：

0.212556561670022
1.96261050550515
0.122784560902905
1

示例2:當參數為NaN或無窮大時，顯示Math.Tan()方法的用法。

// C# program to demonstrate working 
// Math.Tan() method in infinity case 
using System; 
  
class Geeks { 
      
    // Main Method 
    public static void Main(String []args) 
    { 
  
        double positiveInfinity = Double.PositiveInfinity; 
                 
        double negativeInfinity = Double.NegativeInfinity; 
                 
                 
        double nan = Double.NaN; 
        double result; 
  
        // Here argument is negative infinity, 
        // output will be NaN 
         result = Math.Tan(negativeInfinity); 
         Console.WriteLine(result); 
  
        // Here argument is positive infinity, 
        // output will also be NaN 
        result = Math.Tan(positiveInfinity); 
        Console.WriteLine(result); 
  
        // Here argument is NaN, output will be NaN 
        result = Math.Tan(nan); 
        Console.WriteLine(result); 
    } 
}

輸出：

NaN
NaN
NaN

相關用法

注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 C# | Math.Tan() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。