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A019967
Decimal expansion of tangent of 69 degrees.
1
2, 6, 0, 5, 0, 8, 9, 0, 6, 4, 6, 9, 3, 8, 0, 1, 5, 3, 6, 2, 5, 8, 4, 1, 2, 3, 3, 6, 4, 3, 3, 5, 4, 1, 1, 8, 6, 0, 9, 3, 2, 8, 7, 2, 6, 7, 9, 4, 3, 1, 9, 5, 0, 2, 3, 7, 5, 2, 0, 1, 0, 9, 6, 8, 0, 0, 2, 4, 1, 4, 2, 6, 5, 5, 8, 1, 3, 9, 1, 6, 6, 6, 1, 4, 4, 8, 1, 8, 6, 7, 5, 8, 4, 0, 6, 0, 3, 5, 2
OFFSET
1,1
COMMENTS
Also the decimal expansion of cotangent of 21 degrees. - Ivan Panchenko, Sep 01 2014
EXAMPLE
2.605089064693801536258412336433541186093287267943195023752...
MATHEMATICA
RealDigits[Tan[23*Pi/60], 10, 100][[1]] (* G. C. Greubel, Nov 20 2018 *)
PROG
(PARI) default(realprecision, 100); tan(23*Pi/60) \\ G. C. Greubel, Nov 21 2018
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Tan(23*Pi(R)/60); // G. C. Greubel, Nov 21 2018
(Sage) numerical_approx(tan(23*pi/60), digits=100) # G. C. Greubel, Nov 21 2018
CROSSREFS
Cf. A019878 (sine of 69 degrees).
Sequence in context: A115252 A108431 A190144 * A336082 A327280 A350256
KEYWORD
nonn,cons
STATUS
approved