Abū al-Wafā' Būzjānī
Mathematician, Author
0940 – 0998
Who was Abū al-Wafā' Būzjānī?
Abū al-Wafāʾ, Muḥammad ibn Muḥammad ibn Yaḥyā ibn Ismāʿīl ibn al-ʿAbbās al-Būzjānī was a Persian mathematician and astronomer who worked in Baghdad. He made important innovations in spherical trigonometry, and his work on arithmetics for businessmen contains the first instance of using negative numbers in a medieval Islamic text.
He is also credited with compiling the tables of sines and tangents at 15' intervals. He also introduced the sec and cosec functions, as well studied the interrelations between the six trigonometric lines associated with an arc. His Almagest was widely read by medieval Arabic astronomers in the centuries after his death. He is known to have written several other books that have not survived.
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- Born
- Jun 10, 0940
Buzhgan - Also known as
- Abul Wafa
- Nationality
- Iran
- Profession
- Died
- Jul 1, 0998
Baghdad
Submitted
on July 23, 2013
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