A019873 Decimal expansion of sine of 64 degrees.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

An algebraic number of degree 24 and denominator 2. - Charles R Greathouse IV, Nov 06 2017

Examples

			0.898794046...
		

Links

• Ivan Panchenko, Table of n, a(n) for n = 0..1000
• Index entries for algebraic numbers, degree 24

Programs

Mathematica

RealDigits[Sin[64 Degree],10,120][[1]] (* Harvey P. Dale, May 09 2013 *)

PARI

sin(16/45*Pi) \\ Charles R Greathouse IV, Nov 06 2017

Formula

Equals 2*A019841*A019867. - R. J. Mathar, Jan 17 2021