OFFSET
0,1
COMMENTS
By the Lindemann-Weierstrass theorem, this constant is transcendental. - Charles R Greathouse IV, May 13 2019
FORMULA
Equals 1/2 - 1/(2^3*3!) + 1/(2^5/5!) - 1/(2^7*7!) + ..., Taylor series of sin(x).
Equals sqrt((1-A049470)/2).
EXAMPLE
0.47942553860420300027...
MAPLE
evalf(sin(1/2)) ;
MATHEMATICA
RealDigits[Sin[1/2], 10, 120][[1]] (* Amiram Eldar, Jun 27 2023 *)
PROG
(PARI) sin(.5) \\ Charles R Greathouse IV, May 13 2019
CROSSREFS
KEYWORD
AUTHOR
R. J. Mathar, Dec 02 2011
STATUS
approved