A019895 Decimal expansion of sine of 86 degrees.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Examples

			0.99756405025982424761316268064425502636937766038422...
		

Links

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

Crossrefs

Cf. A019852, A019856.

Programs

Maple

Digits:=100: evalf(cos(Pi/45)); # Wesley Ivan Hurt, Aug 31 2014

Mathematica

RealDigits[Cos[Pi/45], 10, 100, -1][[1]] (* Wesley Ivan Hurt, Aug 31 2014 *)

PARI

cos(Pi/45) \\ Stefano Spezia, Feb 09 2025

Formula

Equals cos(Pi/45) = 2F1(8/15,7/15;1/2;3/4) / 2. - R. J. Mathar, Oct 27 2008

Equals 2*A019852*A019856. - R. J. Mathar, Jan 17 2021