A195789 - OEIS

A195789

Decimal expansion of arctan(10).

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

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..100.

FORMULA

Equals arcsin(10/sqrt(101)) = arccos(1/sqrt(101)). - Amiram Eldar, Jul 11 2023

EXAMPLE

arctan(10) = 1.471127674303734591852875571761730851855306377...

MATHEMATICA

r = 10;

N[ArcTan[r], 100]