OFFSET
0,1
COMMENTS
Also the real part of I^(1/9). - Stanislav Sykora, Nov 29 2013
Equals sin(4*Pi/9). - Wesley Ivan Hurt, Sep 01 2014
LINKS
FORMULA
Equals 2F1(7/12,5/12;1/2;3/4) / 2. - R. J. Mathar, Oct 27 2008
EXAMPLE
0.9848077530122080593667430245895230136706432517198424187900...
MAPLE
Digits:=100: evalf(sin(4*Pi/9)); # Wesley Ivan Hurt, Sep 01 2014
MATHEMATICA
RealDigits[ Cos[Pi/18], 10, 111] (* Robert G. Wilson v *)
RealDigits[Sin[80 Degree], 10, 120][[1]] (* Harvey P. Dale, Apr 16 2022 *)
PROG
(PARI) real(I^(1/9)) \\ Michel Marcus, Nov 29 2013
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
STATUS
approved