ehtisham shoukat
Jul 2, 2012
Why are there 360 degrees in a circle
In the ancient world (Babylonians etc) they preferred to use an arithmetic system with fractions that could be calculated easily. They commonly referred to the number 60, since 60 has 12 divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60. For example one could easily say the 1/60 or 5/60 of a certain quantity. In addition, earth rotates almost 360 times (6 times 60) around itself before returning the same position with respect to the sun. Since this motion draws (almost) a circle, it was comfortable to divide a circle into 360 units too.