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 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 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS 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 Cf. A051553-A051555, A051558, A051559. Sequence in context: A111591 A258814 A146488 * A146491 A112118 A111590 Adjacent sequences:  A051554 A051555 A051556 * A051558 A051559 A051560 KEYWORD nonn,easy,cons AUTHOR STATUS approved

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Last modified January 21 11:11 EST 2020. Contains 331105 sequences. (Running on oeis4.)