A280189 Version of sexagesimal expansion of sine of one degree given by the Persian mathematician Al-Kashi in the 15th Century.

1, 2, 49, 43, 11, 14, 44, 16, 26, 17

Offset: 1

Author

Mohammad K. Azarian, Dec 28 2016

Keywords

• nonn
• base
• cons
• fini
• full

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

• 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.

Crossrefs

Cf. A019810, A019812, A049469, A110937, A280188.