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Added RadianToDegree.js and RadianToDegree.test.js in Maths directory #634

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Merged
raklaptudirm merged 1 commit into from
Jul 10, 2021
Merged

Added RadianToDegree.js and RadianToDegree.test.js in Maths directory #634

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23 changes: 23 additions & 0 deletions Maths/RadianToDegree.js
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/*
* Radian : https://en.wikipedia.org/wiki/Radian
* 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
*/

/**
* @param {number} radian
* @return {number}
*/
export const radianToDegree = (radian) => {
return radian * (180 / Math.PI)
}
21 changes: 21 additions & 0 deletions Maths/test/RadianToDegree.test.js
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import { radianToDegree } from '../RadianToDegree'

test('should convert radian to degree:', () => {
const degreeEqual = radianToDegree(0)
expect(degreeEqual).toBe(0)
})

test('should convert radian to degree:', () => {
const degreeEqual = radianToDegree(Math.PI / 4)
expect(degreeEqual).toBe(45)
})

test('should convert radian to degree:', () => {
const degreeEqual = radianToDegree(Math.PI / 2)
expect(degreeEqual).toBe(90)
})

test('should convert radian to degree:', () => {
const degreeEqual = radianToDegree(Math.PI)
expect(degreeEqual).toBe(180)
})