Exterior angle of a cyclic quadrilateral when the opposite interior angle is given

Given cyclic quadrilateral inside a circle, the task is to find the exterior angle of the cyclic quadrilateral when the opposite interior angle is given.
Examples:

Input: 48 
Output: 48 degrees

Input: 83
Output: 83 degrees

Approach: 

• Let, the exterior angle, angle CDE = x
• and, it’s opposite interior angle is angle ABC
• as, ADE is a straight line
• so, angle ADC = (180-x) degrees
• since, opposite angles of a cyclic quadrilateral are supplementary,
• angle ABC = x

Below is the implementation of the above approach:

C++

// C++ program to find the exterior angle
// of a cyclic quadrilateral when
// the opposite interior angle is given

#include <bits/stdc++.h>
using namespace std;

void angleextcycquad(int z)
{
    cout << "The exterior angle of the"
         << " cyclic quadrilateral is "
         << z << " degrees" << endl;
}

// Driver code
int main()
{
    int z = 48;
    angleextcycquad(z);
    return 0;
}

Java

// Java program to find the exterior angle
// of a cyclic quadrilateral when
// the opposite interior angle is given

import java.io.*;

class GFG
{

static void angleextcycquad(int z)
{
    System.out.print( "The exterior angle of the"
        + " cyclic quadrilateral is "
        + z +" degrees");
}

// Driver code
public static void main (String[] args)
{
        int z = 48;
    angleextcycquad(z);
}
}

// This code is contributed by anuj_67..

Python3

# Python program to find the exterior angle
# of a cyclic quadrilateral when
# the opposite interior angle is given

def angleextcycquad(z):
    print("The exterior angle of the",end="");
    print("cyclic quadrilateral is ",end="");
    print(z," degrees");

# Driver code
z = 48;
angleextcycquad(z);

# This code is contributed by 29AjayKumar

C#

// C# program to find the exterior angle
// of a cyclic quadrilateral when
// the opposite interior angle is given
using System;

class GFG
{

static void angleextcycquad(int z)
{
    Console.WriteLine( "The exterior angle of the"
        + " cyclic quadrilateral is "
        + z +" degrees");
}

// Driver code
public static void Main ()
{
        int z = 48;
    angleextcycquad(z);
}
}

// This code is contributed by anuj_67..

Javascript

<script>
// javascript program to find the exterior angle
// of a cyclic quadrilateral when
// the opposite interior angle is given
function angleextcycquad(z)
{
    document.write( "The exterior angle of the"
        + " cyclic quadrilateral is "
        + z +" degrees");
}

// Driver code
var z = 48;
angleextcycquad(z);

// This code is contributed by Princi Singh
</script>

Output:

The exterior angle of the cyclic quadrilateral is 48 degrees

Time Complexity: O(1)

Auxiliary Space: O(1)