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A019845 Decimal expansion of sine of 36 degrees. 7
5, 8, 7, 7, 8, 5, 2, 5, 2, 2, 9, 2, 4, 7, 3, 1, 2, 9, 1, 6, 8, 7, 0, 5, 9, 5, 4, 6, 3, 9, 0, 7, 2, 7, 6, 8, 5, 9, 7, 6, 5, 2, 4, 3, 7, 6, 4, 3, 1, 4, 5, 9, 9, 1, 0, 7, 2, 2, 7, 2, 4, 8, 0, 7, 5, 7, 2, 7, 8, 4, 7, 4, 1, 6, 2, 3, 5, 1, 9, 5, 7, 5, 0, 8, 5, 0, 4, 0, 4, 9, 8, 6, 2, 7, 4, 1, 3, 3, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

This sequence is also decimal expansion of cosine of 54 degrees. - Mohammad K. Azarian, Jun 29 2013

LINKS

Zak Seidov, Table of n, a(n) for n = 0..999

Wikipedia, Exact trigonometric constants

EXAMPLE

sqrt((1/8)*(5 - sqrt(5))) = 0.5877852522924731291687059546390...

PROG

(PARI) sin(Pi/5) \\ Michel Marcus, Apr 25 2015

CROSSREFS

Cf. A019827 (sine of 18 degrees).

Sequence in context: A243598 A230366 A197415 * A143618 A177056 A053787

Adjacent sequences:  A019842 A019843 A019844 * A019846 A019847 A019848

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 8 11:05 EST 2016. Contains 278939 sequences.