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A195707 Decimal expansion of arctan(sqrt(5/8)). 2
6, 6, 8, 9, 6, 4, 0, 7, 4, 2, 6, 8, 4, 0, 7, 1, 3, 0, 1, 4, 1, 3, 2, 7, 1, 1, 2, 6, 1, 2, 1, 7, 6, 4, 7, 8, 0, 1, 6, 9, 3, 0, 7, 1, 8, 1, 1, 9, 6, 3, 4, 7, 0, 8, 1, 6, 2, 9, 2, 9, 7, 6, 0, 3, 5, 2, 0, 5, 0, 4, 1, 5, 4, 9, 0, 1, 8, 2, 2, 3, 8, 8, 0, 5, 9, 8, 6, 4, 2, 4, 0, 2, 1, 7, 7, 4, 0, 4, 3, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..10000

EXAMPLE

arctan(sqrt(5/8)) = 0.6689640742...

MATHEMATICA

r = Sqrt[5/8];

N[ArcSin[r], 100]

RealDigits[%]  (* A195703 *)

N[ArcCos[r], 100]

RealDigits[%]  (* A195700 *)

N[ArcTan[r], 100]

RealDigits[%]  (* A195707 *)

N[ArcCos[-r], 100]

RealDigits[%]  (* A195711 *)

PROG

(PARI) atan(sqrt(5/8)) \\ G. C. Greubel, Aug 19 2018

(MAGMA) SetDefaultRealField(RealField(100)); Arctan(Sqrt(5/8)); // G. C. Greubel, Aug 19 2018

CROSSREFS

Cf. A195700, A195703, A195711.

Sequence in context: A088683 A201578 A322292 * A175217 A000509 A160257

Adjacent sequences:  A195704 A195705 A195706 * A195708 A195709 A195710

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Sep 23 2011

STATUS

approved

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Last modified June 19 04:41 EDT 2021. Contains 345125 sequences. (Running on oeis4.)