33
/it/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
2921487
208829
2
Public Timelines
Public TimelinesFAQ
Public TimelinesFAQ
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
Creare
Create a timeline
Public timelines
Library
FAQ

1 gen 975 anni - Al-Batani

Descrizione:

Al-Batani extends the Indian concepts of sine and cosine to other trigonometric ratios, like tangent, secant and their inverse functions. By the end of the 10th century trigonometry occupied an important place in astronomy texts with chapters on sines, chords, tangents and cotangents, and the formulae for spherical calculations.

Aggiunto al nastro di tempo:

History of Mathematics 2019

ByAly
16 lug 2019
2
0
1313

Data:

1 gen 975 anni
Adesso
~ 1051 years ago
About & FeedbackAccordoPrivatezzaBibliotecaFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL