A019861 Decimal expansion of sine of 52 degrees.

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

Offset

0,1

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

Also cos(19*Pi/90). - Charles R Greathouse IV, Aug 27 2017

Equals 2*A019835*A019873. - R. J. Mathar, Jan 17 2021

Example

0.7880107536067219566939777878358516666416967884754...

Mathematica

First[RealDigits[Sin[52 Degree], 10, 100]] (* Paolo Xausa, Nov 15 2025 *)

Prog

(PARI) sin(13*Pi/45) \\ Charles R Greathouse IV, Aug 27 2017

Crossrefs

Sequence in context: A153856 A239362 A094819 * A065470 A353781 A338815

Adjacent sequences: A019858 A019859 A019860 * A019862 A019863 A019864

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Status

approved