CoffeeScript converts radians and degrees

Convert radians and degrees

Problem

You need to implement a transition between radian and degree.

Solution

Use JavaScript's Math.PI and a simple formula to convert both.

# 弧度转换成度
radiansToDegrees = (radians) ->
    degrees = radians * 180 / Math.PI

radiansToDegrees(1)
# => 57.29577951308232

# 度转换成弧度
degreesToRadians = (degrees) ->
    radians = degrees * Math.PI / 180

degreesToRadians(1)
# => 0.017453292519943295