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Journal:   TARIKH-E ELM   2008 , Volume - , Number 6; Page(s) 69 To 104.
 
Paper: 

A Persian Treatise On The Determination Of The Sine Of One Degree

 
 
Author(s):  Savadi Fatemeh*
 
* 
 
Abstract: 
Dar Bayān-e Estekhrādj-e Djayb-e Yek Daradje is a Persian treatise by an anonymous author. The author’s purpose is to describe and explain a method for the determination of the Sine of one degree according to Ḳūshchī’s Persian commentary on Ulugh Beg’s Zīdj, and Ḳāḍīzāda’s Arabic treatise entitled Risāla fi Istikhrādj Djayb Daradjah Wāḥidah. Ḳāḍīzāda’s work, extant in several manuscripts, is, in fact, a revision of the lost work of the real inventor of the method, Kāshānī (al-Kāshī). Ḳūshchī in his commentary explains Kāshānī’s method, without mentioning his name. In this article, Dar Bayān-e Estekhrādj-e Djayb-e Yek Daradje is rewritten based on its unique manuscript, extant in Berlin, so that one can follow the traces of author’s citations from Ḳūsh chī and Ḳāḍīzāda’s works.
 
Keyword(s): SINE OF ONE DEGREE, KĀSHĀNĪ (AL-KĀSHĪ), ḲĀḌĪZĀDA, ULUGH BEG
 
 
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APA: Copy

SAVADI, F. (2008). A PERSIAN TREATISE ON THE DETERMINATION OF THE SINE OF ONE DEGREE. TARIKH-E ELM, -(6), 69-104. https://www.sid.ir/en/journal/ViewPaper.aspx?id=162060



Vancouver: Copy

SAVADI FATEMEH. A PERSIAN TREATISE ON THE DETERMINATION OF THE SINE OF ONE DEGREE. TARIKH-E ELM. 2008 [cited 2022May29];-(6):69-104. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=162060



IEEE: Copy

SAVADI, F., 2008. A PERSIAN TREATISE ON THE DETERMINATION OF THE SINE OF ONE DEGREE. TARIKH-E ELM, [online] -(6), pp.69-104. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=162060.



 
 
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