cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-4 of 4 results.

A019897 Decimal expansion of sine of 88 degrees.

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Comments

Equals sin(22*Pi/45). - Wesley Ivan Hurt, Sep 01 2014
An algebraic number of degree 24 and denominator 2. - Charles R Greathouse IV, Aug 27 2017

Examples

			0.9993908270190957300062434400439299644952363066699967731039004...

Links

Programs

Formula

Equals 2*A019853*A019855. - R. J. Mathar, Jan 17 2021

A019878 Decimal expansion of sine of 69 degrees.

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Comments

An algebraic number of degree 16 and denominator 2. - Charles R Greathouse IV, Nov 06 2017

Links

Programs

Formula

Equals A019855 * A019876 + A019832 * A019853 = A019875 * A019896 + A019812 * A019833. - R. J. Mathar, Jan 27 2021

A019864 Decimal expansion of sine of 55 degrees.

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Comments

An algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Nov 05 2017

Links

Programs

Formula

Equals cos(7*Pi/36) = 2F1(19/24,5/24;1/2;3/4) / 2. - R. J. Mathar, Oct 27 2008
Equals A019853 * A019888 + A019820 * A019855 = A019859 * A019894 + A019814 * A019849. - R. J. Mathar, Jan 27 2021

A019944 Decimal expansion of tangent of 46 degrees.

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Comments

Also the decimal expansion of cotangent of 44 degrees. - Ivan Panchenko, Sep 01 2014

Examples

			1.0355303137905695069588325512481320249699384126523399634511...

Links

Crossrefs

Cf. A019855 (sine of 46 degrees).

Programs

  • Magma
    SetDefaultRealField(RealField(100)); R:= RealField(); Tan(23*Pi(R)/90); // G. C. Greubel, Nov 24 2018
  • Mathematica
    RealDigits[Tan[23*Pi/90], 10, 100][[1]] (* G. C. Greubel, Nov 24 2018 *)
RealDigits[Tan[46 Degree],10,120][[1]] (* Harvey P. Dale, Jan 15 2022 *)
  • PARI
    default(realprecision, 100); tan(23*Pi/90) \\ G. C. Greubel, Nov 24 2018
  • Sage
    numerical_approx(tan(23*pi/90), digits=100) # G. C. Greubel, Nov 24 2018
Showing 1-4 of 4 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.