A019945 Decimal expansion of tangent of 47 degrees.

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

Offset

1,3

Comments

Also the decimal expansion of cotangent of 43 degrees. - Ivan Panchenko, Sep 01 2014

Links

Ivan Panchenko, Table of n, a(n) for n = 1..1000

Example

1.07236871002468253294602774807255016628939779143138465...

Mathematica

RealDigits[Tan[47*Pi/180], 10, 100][[1]] (* G. C. Greubel, Nov 24 2018 *)

Prog

(PARI) default(realprecision, 100); tan(47*Pi/180) \\ G. C. Greubel, Nov 24 2018
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Tan(47*Pi(R)/180); // G. C. Greubel, Nov 24 2018
(Sage) numerical_approx(tan(47*pi/180), digits=100) # G. C. Greubel, Nov 24 2018

Crossrefs

Cf. A019856 (sine of 47 degrees).

Sequence in context: A210975 A242671 A065476 * A335825 A336011 A193027

Adjacent sequences: A019942 A019943 A019944 * A019946 A019947 A019948

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved