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A195719 Decimal expansion of arccos(-(1/2)^(2/3)).

%I A195719 #12 Nov 21 2024 07:53:06
%S A195719 2,2,5,2,2,9,8,7,0,8,4,7,6,3,1,0,1,6,0,1,8,7,1,8,5,1,2,3,7,9,8,6,4,6,
%T A195719 5,0,2,6,5,7,9,5,8,9,4,6,9,0,5,8,9,0,5,4,7,5,1,0,1,9,4,5,5,0,2,8,5,9,
%U A195719 8,5,4,8,6,1,6,2,8,1,8,6,3,5,0,0,8,3,7,7,2,1,0,1,6,6,1,4,9,1,7,6
%N A195719 Decimal expansion of arccos(-(1/2)^(2/3)).
%H A195719 G. C. Greubel, <a href="/A195719/b195719.txt">Table of n, a(n) for n = 1..10000</a>
%H A195719 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e A195719 arccos(-(1/2)^(2/3)) = 2.252298708476310160...
%t A195719 r = (1/2)^(2/3);
%t A195719 N[ArcCos[-r], 100]
%t A195719 RealDigits[%]
%o A195719 (PARI) acos(-(1/2)^(2/3)) \\ _G. C. Greubel_, Aug 20 2018
%o A195719 (Magma) SetDefaultRealField(RealField(100)); Arccos(-(1/2)^(2/3)); // _G. C. Greubel_, Aug 20 2018
%Y A195719 Cf. A195716.
%K A195719 nonn,cons
%O A195719 1,1
%A A195719 _Clark Kimberling_, Sep 23 2011