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A195729
Decimal expansion of arctan(3).
1
1, 2, 4, 9, 0, 4, 5, 7, 7, 2, 3, 9, 8, 2, 5, 4, 4, 2, 5, 8, 2, 9, 9, 1, 7, 0, 7, 7, 2, 8, 1, 0, 9, 0, 1, 2, 3, 0, 7, 7, 8, 2, 9, 4, 0, 4, 1, 2, 9, 8, 9, 6, 7, 1, 9, 0, 5, 4, 6, 6, 9, 2, 3, 6, 7, 9, 7, 1, 5, 1, 9, 6, 5, 7, 3, 7, 2, 9, 3, 9, 5, 4, 9, 5, 7, 6, 0, 8, 9, 9, 0, 3, 2, 0, 4, 1, 7, 1, 5, 9
OFFSET
1,2
LINKS
FORMULA
Equals arctan(1) + arctan(1/2). - Charles R Greathouse IV, Sep 23 2014
Equals arcsin(3/sqrt(10)) = arccos(sqrt(1/10)). - Amiram Eldar, Jul 11 2023
EXAMPLE
arctan(3) = 1.2490457723982544258299170772...
MATHEMATICA
r = 3;
N[ArcTan[r], 100]
RealDigits[%] (* A195729 *)
N[ArcCot[r], 100]
RealDigits[%] (* A105531 *)
N[ArcSec[r], 100]
RealDigits[%] (* A137914 *)
N[ArcCsc[r], 100]
RealDigits[%] (* A188615 *)
PROG
(PARI) atan(3) \\ Charles R Greathouse IV, Sep 23 2014
(Magma) SetDefaultRealField(RealField(100)); Arctan(3); // G. C. Greubel, Aug 20 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 23 2011
STATUS
approved