Before moving to the actual solution, let’s try to find out what is a degree, a radian, and their relations.

**Radian :** The radian is the standard unit of angular measure, used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends. One radian is just under 57.3 degrees.

**Degree :** A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees.

The relation 2pi*rad = 360° can be derived using the formula for arc length.

An arc of a circle with the same length as the radius of that circle subtends an angle of 1 radian. The circumference subtends an angle of 2pi radians.

Therefore the formula is:

degree = radian * (180/pi)where, pi = 22/7

**Examples:**

Input : radian = 20 Output : degree = 1145.4545454545455 Explanation: degree = 20 * (180/pi) Input : radian = 5 Output : degree = 286.3636363636364 Explanation : degree = 20 * (180/pi)

**Note:** In this programs, we have taken the value of pi as 3.14159 to get standard result in all three languages.

## C/C++

`// C code to convert radian to degree ` ` ` `#include <stdio.h> ` ` ` `// Function for convertion ` `double` `Convert(` `double` `radian){ ` ` ` `double` `pi = 3.14159; ` ` ` `return` `(radian * (180/pi)); ` `} ` ` ` `// Driver Code ` `int` `main(){ ` ` ` `double` `radian = 5.0; ` ` ` `double` `degree = Convert(radian); ` ` ` `printf` `(` `"%.5lf"` `, degree); ` ` ` `return` `0; ` `} ` |

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## Java

`// Java code to convert radian to degree ` ` ` `import` `java.io.*; ` `class` `GFG { ` ` ` `// Function for convertion ` ` ` `static` `double` `Convert(` `double` `radian){ ` ` ` `double` `pi = ` `3.14159` `; ` ` ` `return` `(radian * (` `180` `/pi)); ` ` ` `} ` ` ` `// Driver Code ` ` ` `public` `static` `void` `main (String[] args) { ` ` ` `double` `radian = ` `5.0` `; ` ` ` `double` `degree = Convert(radian); ` ` ` `System.out.println(` `"degree = "` `+ degree); ` ` ` `} ` `} ` |

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## Python3

`# Python code to convert radian to degree ` ` ` `# Function for convertion ` `def` `Convert(radian): ` ` ` `pi ` `=` `3.14159` ` ` `# Simply used the formula ` ` ` `degree ` `=` `radian ` `*` `(` `180` `/` `pi) ` ` ` `return` `degree ` ` ` `# Driver Code ` `radian ` `=` `5` `print` `(` `"degree ="` `,(Convert(radian))) ` |

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Output:

286.47914

## C#

`// C# code to convert radian to degree. ` `using` `System; ` ` ` `class` `GFG { ` ` ` ` ` `// Function for convertion ` ` ` `static` `double` `Convert(` `double` `radian){ ` ` ` `double` `pi = 3.14159; ` ` ` `return` `(radian * (180 / pi)); ` ` ` `} ` ` ` ` ` `// Driver Code ` ` ` `public` `static` `void` `Main () { ` ` ` `double` `radian = 5.0; ` ` ` `double` `degree = Convert(radian); ` ` ` `Console.Write(` `"degree = "` `+ degree); ` ` ` `} ` `} ` ` ` `// This code is contributed by Nitin Mittal. ` |

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## PHP

`<?php ` `// PHP code to convert radian to degree ` ` ` `// Function for convertion ` `function` `Convert(` `$radian` `) ` `{ ` ` ` `$pi` `= 3.14159; ` ` ` `return` `(` `$radian` `* (180 / ` `$pi` `)); ` `} ` ` ` `// Driver Code ` `$radian` `= 5.0; ` `$degree` `= Convert(` `$radian` `); ` `echo` `( ` `$degree` `); ` ` ` `// This code is contributed by nitin mittal ` `?> ` |

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Output :

286.47914

**Reference:**

https://en.wikipedia.org/wiki/Radian

https://en.wikipedia.org/wiki/Degree_(angle)

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