A019817 Decimal expansion of sine of 8 degrees.

1, 3, 9, 1, 7, 3, 1, 0, 0, 9, 6, 0, 0, 6, 5, 4, 4, 4, 1, 1, 2, 4, 9, 6, 6, 6, 3, 3, 0, 1, 1, 0, 5, 2, 7, 5, 4, 5, 5, 9, 2, 4, 9, 3, 1, 3, 7, 3, 5, 6, 8, 8, 7, 6, 6, 0, 1, 6, 8, 6, 6, 0, 3, 0, 1, 8, 1, 3, 3, 1, 1, 5, 7, 0, 0, 8, 6, 6, 6, 0, 9, 8, 5, 1, 4, 0, 4, 9, 3, 8, 8, 6, 4, 0, 2, 8, 4, 2, 6

Offset

0,2

Comments

An algebraic number of degree 24 and denominator 2. - Charles R Greathouse IV, Aug 27 2017

Links

Ivan Panchenko, Table of n, a(n) for n = 0..1000

Index entries for algebraic numbers, degree 24.

Formula

Equals 2*A019813*A019895. - R. J. Mathar, Jan 17 2021

Example

0.13917310...

Mathematica

RealDigits[Sin[2*Pi/45], 10, 99][[1]] (* Stefano Spezia, Feb 09 2025 *)

Prog

(PARI) sin(2*Pi/45) \\ Charles R Greathouse IV, Aug 27 2017

Crossrefs

Cf. A019813, A019895.

Sequence in context: A154572 A333346 A165141 * A243526 A329214 A390310

Adjacent sequences: A019814 A019815 A019816 * A019818 A019819 A019820

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved