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A019963 Decimal expansion of tangent of 65 degrees. 1

%I #16 Sep 17 2023 18:48:30

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

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

%U 5,5,0,3,9,4,9,8,9,7,5,5,8,0,0,7,4,7,4,0,2,7,1,4,8,3,5,3,0,5,3

%N Decimal expansion of tangent of 65 degrees.

%H Ivan Panchenko, <a href="/A019963/b019963.txt">Table of n, a(n) for n = 1..1000</a>

%e 2.144506920509558616356260791045922180685931574276...

%t RealDigits[Tan[65*Pi/180], 10, 100][[1]] (* _G. C. Greubel_, Nov 21 2018 *)

%t RealDigits[Tan[65 Degree],10,120][[1]] (* _Harvey P. Dale_, Sep 17 2023 *)

%o (PARI) default(realprecision, 100); tan(65*Pi/180) \\ _G. C. Greubel_, Nov 21 2018

%o (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Tan(65*Pi(R)/180); // _G. C. Greubel_, Nov 21 2018

%o (Sage) numerical_approx(tan(65*pi/180), digits=100) # _G. C. Greubel_, Nov 21 2018

%Y Cf. A019874 (sine of 65 degrees).

%K nonn,cons

%O 1,1

%A _N. J. A. Sloane_

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)