login
A051557
Decimal expansion of cos(Pi/2 degrees). (Of course, cos(Pi/2 radians) = 0.)
5
9, 9, 9, 6, 2, 4, 2, 1, 6, 8, 5, 9, 4, 8, 1, 6, 0, 9, 4, 7, 6, 7, 2, 2, 4, 0, 3, 4, 8, 9, 5, 2, 5, 5, 9, 5, 9, 0, 0, 7, 1, 3, 7, 3, 5, 0, 7, 1, 2, 2, 2, 3, 6, 1, 8, 0, 8, 1, 2, 7, 1, 9, 5, 2, 7, 9, 2, 8, 6, 0, 1, 6, 6, 9, 3, 3, 3, 3, 2, 9, 9, 2, 9, 4, 9, 7, 3, 7, 9, 6, 8, 9, 1, 4, 4, 4, 2, 9, 6
OFFSET
0,1
EXAMPLE
0.999624216...
MAPLE
evalf(cos(Pi^2/360)) ;
MATHEMATICA
RealDigits[Cos[Pi/2 Degree], 10, 120][[1]] (* Harvey P. Dale, Sep 21 2011 *)
PROG
(PARI) cos(Pi^2/360) \\ Charles R Greathouse IV, Nov 05 2017
CROSSREFS
KEYWORD
nonn,easy,cons
STATUS
approved