给定一个正六边形边的整数a ,任务是找到并打印其对角线的长度。
例子:
Input: a = 6
Output: 10.38
Input: a = 9
Output: 15.57
方法:我们知道多边形的内角和 = (n – 2) * 180其中, n是多边形的边数。
因此,六边形的内角和 = 4 * 180 = 720并且每个内角将为120 。
现在,我们必须找到BC = 2 * x 。如果我们在BC上画一条垂直的AO ,我们将看到BO和OC 中的BC的垂直平分线,因为三角形AOB和AOC彼此全等。
所以,在三角形AOB 中, sin(60) = x / a即x = 0.866 * a
因此,对角线长度将为2 * x即1.73 * a 。
下面是上述方法的实现:
C++
// C++ Program to find the diagonal
// of a regular hexagon
#include
using namespace std;
// Function to find the diagonal
// of a regular hexagon
float hexDiagonal(float a)
{
// Side cannot be negative
if (a < 0)
return -1;
// Length of the diagonal
float d = 1.73 * a;
return d;
}
// Driver code
int main()
{
float a = 9;
cout << hexDiagonal(a) << endl;
return 0;
}
Java
// Java Program to find the diagonal
// of a regular hexagon
public class GFG
{
// Function to find the diagonal
// of a regular hexagon
static double hexDiagonal(float a)
{
// Side cannot be negative
if (a < 0)
return -1;
// Length of the diagonal
double d = (double)1.73 * a;
return d;
}
// Driver code
public static void main(String []args)
{
float a = 9;
System.out.println(hexDiagonal(a)) ;
}
// This code is contributed by Ryuga
}
Python3
# Python3 Program to find the diagonal
# of a regular hexagon
# Function to find the diagonal
# of a regular hexagon
def hexDiagonal(a):
# Side cannot be negative
if (a < 0):
return -1;
# Length of the diagonal
d = 1.73 * a;
return d;
# Driver code
a = 9;
print(hexDiagonal(a));
# This code is contributed
# by Akanksha Rai
C#
// C# Program to find the diagonal
// of a regular hexagon
using System ;
public class GFG
{
// Function to find the diagonal
// of a regular hexagon
static double hexDiagonal(float a)
{
// Side cannot be negative
if (a < 0)
return -1;
// Length of the diagonal
double d = (double)1.73 * a;
return d;
}
// Driver code
public static void Main()
{
float a = 9;
Console.WriteLine(hexDiagonal(a)) ;
}
// This code is contributed by Subhadeep
}
PHP
Javascript
输出:
15.57
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