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1 Jan 975 Jahr - Al-Batani

Beschreibung:

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.

Zugefügt zum Band der Zeit:

History of Mathematics 2019

ByAly
16 Jul 2019
2
0
1313

Datum:

1 Jan 975 Jahr
Jetzt
~ 1051 years ago
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