C＃中的MathF.Acos()方法与示例

MathF.Acos(Single)方法用于返回以余弦值作为单个或浮点值参数给出的角度。如果参数为NaN，则结果将为NaN。

Syntax: public static float Acos (float x);
Here, it takes a standard floating point number.

Return Value: This method returns an angle θ, measured in radians, its type is System.Single and value will be less than Single.MaxValue.

下面的程序将说明上述方法的使用：

范例1：

// C# program to demonstrate the
// MathF.Acos(Single) Method
using System;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
  
        // Declaring and initializing value
        float value = 0.5f;
  
        // getting absolute angle value in float
        // using Acos() method
        float result = MathF.Acos(value);
  
        // Display the value
        Console.WriteLine("Angle is {0}", result);
    }
}

输出：

Angle is 1.047198

范例2：

// C# program to demonstrate the
// MathF.Acos(Single) Method
using System;
using System.Globalization;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        // calling get() method
        get(0.19f);
        get(Single.NaN);
        get(Single.NegativeInfinity);
        get(Single.PositiveInfinity);
    }
  
    // defining get() method
    public static void get(float value)
    {
  
        // getting absolute angle value in float
        // using Acos() method
        float result = MathF.Acos(value);
  
        // Display the value
        Console.WriteLine("Acos({0}) will be {1}",
                                   value, result);
    }
}

输出：

Acos(0.19) will be 1.379634
Acos(NaN) will be NaN
Acos(-Infinity) will be NaN
Acos(Infinity) will be NaN