login
Version of sexagesimal expansion of sine of one degree given by the Persian mathematician Al-Kashi in the 15th Century.
2

%I #18 Jan 08 2025 01:58:54

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

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

%C 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.

%H Mohammad K. Azarian, <a href="http://forumgeom.fau.edu/FG2015volume15/FG201523.pdf">A Study of Risala al-Watar wa'l Jaib ("The Treatise on the Chord and Sine")</a>, Forum Geometricorum, Volume 15 (2015) 229-242. Mathematical Reviews, MR 3418854 (Reviewed), Zentralblatt MATH, Zbl 1328.01015.

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

%K nonn,base,cons,fini,full

%O 1,2

%A _Mohammad K. Azarian_, Dec 28 2016