A019959 Decimal expansion of tangent of 61 degrees.

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

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

Also the decimal expansion of cotangent of 29 degrees. - Ivan Panchenko, Sep 01 2014

Examples

			1.80404775527142393738178474823700772431565705569852176945667786458...
		

Links

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

Crossrefs

Cf. A019870 (sine of 61 degrees).

Programs

Magma

SetDefaultRealField(RealField(100)); R:= RealField(); Tan(61*Pi(R)/180); // G. C. Greubel, Nov 22 2018

Mathematica

RealDigits[Tan[61 Degree],10,120][[1]] (* Harvey P. Dale, Mar 29 2016 *)
RealDigits[Tan[61*Pi/180], 10, 100][[1]] (* G. C. Greubel, Nov 22 2018 *)

PARI

default(realprecision, 100); tan(61*Pi/180) \\ G. C. Greubel, Nov 22 2018

Sage

numerical_approx(tan(61*pi/180), digits=100) # G. C. Greubel, Nov 22 2018