1 Peer review [reviewer #82274] added 30th August, 2006 at 23:34:31
Once again - incomplete sentence fragments, poor quality presentation, awful layout.
Originality: 4, Importance: 1, Overall quality: 1
2 Peer review [reviewer #31786] added 2nd October, 2006 at 16:34:53
Apart from issues on presentation quality, this Observation is fairly trivial. In fact, it can be extended to arbitrary numbers a ~ N sin(a/N).
Originality: 2, Importance: 2, Overall quality: 2
3 Peer review [reviewer #10906] added 3rd October, 2006 at 03:42:31
Sorry, this isn’t very impressive. I hope that most of my Calculus 2 students could do this. So is it a popularization? I don’t know; it’s not very clear. Keep trying, possibly in an area of Mathematics that hasn’t been so thoroughly worked?
Originality: 2, Importance: 1, Overall quality: 1
4 added 3rd October, 2006 at 03:48:48
Actually, the beauty of this approximation is that an irrational number is obtained, from a trigonometrical function, and rational numbers.
Of course, one may notice that 180 degrees is actually Pi radians, so it may seem trivial. But I would like to think that this is a legitimate approximation to Pi, that is much shorter than other approximations.
5 Additional peer comment [reviewer #31786] added 3rd October, 2006 at 05:03:34
It is actually erroneous to call this an approximation to pi at all, because you need the exact value of pi to do the conversion of 180 degrees to radians.