当给定交替段中的角度时，弦和切线之间的角度

给定一个圆，其弦和切线在特定点相交。给出了交替段中的角度。这里的任务是找到弦和切线之间的角度。
例子：

Input: z = 48
Output: 48 degrees

Input: z = 64
Output: 64 degrees

方法：

• 让，角度BAC是交替段中的给定角度。
• 让，弦和圆之间的角度 = 角度CBY = z
• 因为从切线中心绘制的线是垂直的，
• 所以，角度OBC = 90-z
• 因为， OB = OC = 圆的半径
• 所以，角度OCB = 90-z
• 现在，在三角形OBC 中，
  角度 OBC + 角度 OCB + 角度 BOC = 180
  角度 BOC = 180 – (90-z) – (90-z)
  角度 BOC = 2z
• 因为圆圆周上的角度是同一弧所对的中心角度的一半，
  所以，角度BAC = z
• 因此，角度 BAC = 角度 CBY

下面是上述方法的实现：

C++

// C++ program to find the angle
// between a chord and a tangent
// when angle in the alternate segment is given
 
#include 
using namespace std;
 
void anglechordtang(int z)
{
    cout << "The angle between tangent"
         << " and the chord is "
         << z << " degrees" << endl;
}
 
// Driver code
int main()
{
    int z = 48;
    anglechordtang(z);
    return 0;
}

Java

// Java program to find the angle
// between a chord and a tangent
// when angle in the alternate segment is given
import java.io.*;
 
class GFG
{
 
    static void anglechordtang(int z)
    {
        System.out.print( "The angle between tangent"
            + " and the chord is "
            + z + " degrees");
    }
     
    // Driver code
    public static void main (String[] args)
    {
        int z = 48;
        anglechordtang(z);
    }
}
 
// This code is contributed by anuj_67..

Python3

# Python3 program to find the angle
# between a chord and a tangent
# when angle in the alternate segment is given
def anglechordtang(z):
 
    print("The angle between tangent",
          "and the chord is", z , "degrees");
 
# Driver code
z = 48;
anglechordtang(z);
 
# This code is contributed
# by Princi Singh

C#

// C# program to find the angle
// between a chord and a tangent
// when angle in the alternate segment is given
using System;
 
class GFG
{
 
    static void anglechordtang(int z)
    {
        Console.WriteLine( "The angle between tangent"
            + " and the chord is "
            + z + " degrees");
    }
     
    // Driver code
    public static void Main ()
    {
        int z = 48;
        anglechordtang(z);
    }
}
 
// This code is contributed by anuj_67..

Javascript

// javascript program to find the angle
// between a chord and a tangent
// when angle in the alternate segment is given
 
function anglechordtang(z)
{
document.write( "The angle between tangent"
               + " and the chord is "
               + z + " degrees");
}
 
// Driver code
 
var z = 48;
anglechordtang(z);
 
// This code is contributed by Amit Katiyar
 

输出：

The angle between tangent and the chord is 48 degrees

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