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A019813 Decimal expansion of sine of 4 degrees. 3

%I #21 Aug 21 2023 11:49:08

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

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

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

%N Decimal expansion of sine of 4 degrees.

%C An algebraic number of degree 24 and denominator 2. - _Charles R Greathouse IV_, Aug 27 2017

%H Ivan Panchenko, <a href="/A019813/b019813.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Al#algebraic_24">Index entries for algebraic numbers, degree 24</a>

%F Equals 2*A019811*A019897. - _R. J. Mathar_, Jan 17 2021

%e 0.06975...

%t Join[{0},RealDigits[Sin[4 Degree],10,120][[1]]] (* _Harvey P. Dale_, Oct 07 2019 *)

%o (PARI) sin(Pi/45) \\ _Charles R Greathouse IV_, Aug 27 2017

%K nonn,cons

%O 0,2

%A _N. J. A. Sloane_

%E Zero added in front by _R. J. Mathar_, Feb 05 2009

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)