```/*
* Degree : https://en.wikipedia.org/wiki/Degree_(angle)
*
* Angle in Degree = ( Angle in Radian ) x ( 180 / pi )
*
* Example :
* Question : Convert pi / 2 degree to radian
* So, Angle in Radian = pi / 2
*
* Solution :
* Angle in Degree = ( pi / 2 ) x ( 180 / pi ) = 90
*
* So, pi / 2 radian is equal to 90 degree
*/

/**