|
| |
|
|
A019815
|
|
Decimal expansion of sine of 6 degrees.
|
|
0
|
|
|
|
1, 0, 4, 5, 2, 8, 4, 6, 3, 2, 6, 7, 6, 5, 3, 4, 7, 1, 3, 9, 9, 8, 3, 4, 1, 5, 4, 8, 0, 2, 4, 9, 8, 1, 1, 9, 0, 8, 0, 6, 5, 5, 8, 6, 9, 4, 7, 4, 5, 9, 3, 1, 1, 3, 9, 9, 3, 2, 7, 5, 4, 7, 6, 7, 1, 2, 4, 8, 4, 6, 5, 0, 6, 9, 3, 1, 8, 0, 0, 4, 6, 8, 2, 8, 1, 8, 0, 3, 9, 8, 7, 9, 8, 6, 0, 4, 4, 2, 6
(list;
constant;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,3
|
|
|
COMMENTS
|
Decimal expansion of 1/8 (-1 - Sqrt[5] + Sqrt[6 (5 - Sqrt[5])]) [From Artur Jasinski, Oct 28 2008]
|
|
|
LINKS
|
Table of n, a(n) for n=0..98.
Anonymous, Exact trigonometric constants, Wikipedia
|
|
|
FORMULA
|
Equals cos(7*Pi/15) = -cos(8*Pi/15) = 2F1(6/5,-1/5;1/2;3/4) / 2 = - 2F1(13/10,-3/10;1/2;3/4) / 2 . [From R. J. Mathar, Oct 27 2008]
|
|
|
MATHEMATICA
|
First[RealDigits[1/8 (-1 - Sqrt[5] + Sqrt[6 (5 - Sqrt[5])]), 10, 100]] [From Artur Jasinski, Oct 28 2008]
RealDigits[Sin[6 Degree], 10, 120][[1]] (* From Harvey P. Dale, Apr 27 2012 *)
|
|
|
CROSSREFS
|
Sequence in context: A118472 A194880 A111624 * A200684 A046572 A046574
Adjacent sequences: A019812 A019813 A019814 * A019816 A019817 A019818
|
|
|
KEYWORD
|
nonn,cons
|
|
|
AUTHOR
|
N. J. A. Sloane.
|
|
|
STATUS
|
approved
|
| |
|
|
