A019822 Decimal expansion of sine of 13 degrees.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

An algebraic number of degree 48 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 48

Programs

Mathematica

RealDigits[Sin[13 Degree],10,120][[1]] (* Harvey P. Dale, Sep 29 2013 *)

PARI

sin(13*Pi/180) \\ Charles R Greathouse IV, Aug 27 2017

Formula

Equals A019821 * A019898 + A019810 * A019887. - R. J. Mathar, Jan 27 2021