A051559 Decimal expansion of tan(Pi/2 degrees). (Of course, tan(Pi/2 radians) = infinity.)

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy
• cons

Examples

			0.027422438...
		

Crossrefs

Cf. A051553-A051555, A051557, A051558.

Programs

Maple

evalf(tan(Pi^2/360)) ;

Mathematica

Join[{0},RealDigits[Tan[Pi/2 Degree],10,120][[1]]] (* Harvey P. Dale, Sep 05 2015 *)

PARI

tan(Pi^2/360) \\ Charles R Greathouse IV, Nov 05 2017