A019924 Decimal expansion of tangent of 26 degrees.

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

Offset

0,1

Comments

Also the decimal expansion of cotangent of 64 degrees. - Mohammad K. Azarian, Jun 30 2013

Links

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

Index entries for algebraic numbers, degree 24.

Formula

From Amiram Eldar, Jun 15 2026: (Start)

Equals 1/A019962.

x^24 - 276*x^22 + 15810*x^20 - 250372*x^18 + 1475055*x^16 - 3994152*x^14 + 5407388*x^12 - 3852456*x^10 + 1465839*x^8 - 288452*x^6 + 26562*x^4 - 852*x^2 + 1. (End)

Example

0.48773258856586142277311112661696043359660082204002...

Mathematica

RealDigits[Tan[26 Degree], 10, 120][[1]] (* Harvey P. Dale, Dec 05 2012 *)

Prog

(PARI) tan(13*Pi/90) \\ Charles R Greathouse IV, Apr 30 2026

Crossrefs

Cf. A019962.

Sequence in context: A146501 A197574 A337606 * A021209 A247605 A244000

Adjacent sequences: A019921 A019922 A019923 * A019925 A019926 A019927

Keyword

nonn,cons,changed

Author

N. J. A. Sloane

Status

approved