A280188 Base-60 (Babylonian or sexagesimal) expansion of sine of 1 degree.

1, 2, 49, 43, 11, 14, 44, 16, 26, 18, 28, 49, 20, 26, 50, 41, 13, 6, 46, 25, 26, 26, 34, 6, 40, 18, 50, 31, 6, 35, 20, 44, 6, 39, 18, 5, 38, 58, 2, 0, 5, 4, 33, 59, 11, 35, 33, 50, 34, 7, 56, 43, 38, 30, 15, 49, 36, 42, 6, 43, 10, 38, 45, 53, 15, 59, 7, 19, 46

Offset

1,2

Comments

The Fifteenth Century Persian mathematician Jamshid Al-Kashi was the first to calculate the value of sine of one degree correct to ten sexagesimal places (17 decimal digits) in his Risala al-Watar wa'l Jaib.

Links

Table of n, a(n) for n=1..69.

Mohammad K. Azarian, A Study of Risala al-Watar wa'l Jaib ("The Treatise on the Chord and Sine"), Forum Geometricorum, Volume 15 (2015) 229-242. Mathematical Reviews, MR 3418854 (Reviewed), Zentralblatt MATH, Zbl 1328.01015.

Mathematica

RealDigits[Sin[1 Degree], 60, 200][[1]]

Crossrefs

Cf. A019810, A019812, A049469, A110937, A280189.

Sequence in context: A296142 A364890 A280189 * A058845 A041287 A057563

Adjacent sequences: A280185 A280186 A280187 * A280189 A280190 A280191

Keyword

nonn,base,cons

Author

Mohammad K. Azarian, Dec 28 2016

Extensions

More terms from Jon E. Schoenfield, Jan 13 2017

Status

approved