login
A019864
Decimal expansion of sine of 55 degrees.
3
8, 1, 9, 1, 5, 2, 0, 4, 4, 2, 8, 8, 9, 9, 1, 7, 8, 9, 6, 8, 4, 4, 8, 8, 3, 8, 5, 9, 1, 6, 8, 4, 3, 4, 3, 1, 8, 9, 0, 0, 1, 1, 4, 6, 9, 0, 2, 6, 1, 6, 2, 0, 0, 8, 2, 5, 7, 5, 5, 5, 0, 4, 1, 2, 5, 4, 1, 8, 8, 5, 5, 8, 4, 5, 4, 6, 9, 3, 0, 8, 0, 7, 5, 2, 9, 6, 2, 4, 5, 2, 8, 0, 8, 4, 6, 1, 3, 3, 0
OFFSET
0,1
COMMENTS
An algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Nov 05 2017
FORMULA
Equals cos(7*Pi/36) = 2F1(19/24,5/24;1/2;3/4) / 2. - R. J. Mathar, Oct 27 2008
MATHEMATICA
RealDigits[Sin[55 Degree], 10, 120][[1]] (* Harvey P. Dale, Jan 30 2023 *)
PROG
(PARI) sin(11/36*Pi) \\ Charles R Greathouse IV, Nov 05 2017
CROSSREFS
Sequence in context: A141228 A133820 A258718 * A230151 A308043 A286253
KEYWORD
nonn,cons
STATUS
approved