Duplicate of HELLENISTIC, GREEK AND INCIENT AND MEDIEVAL CHINA

It is the branch of mathematics concerned with specific functions of angles and their application to calculation.

He explain Jiu Xian's methods for solving higher-degree root extractions.

He discovered obliquity of ecliptic.

Hipparchus was primarily an astronomer, but the beginnings of trigonometry apparenty began with him.

Pythagoras believed the earth was a sphere as were sun, moon and stars, which he believed circled the earth.

He made his owm astronomical observations and recommemded ne calendar.

He wrote his mathematical manual. including formula for summing an arithmetic sequence.

Heraclides modified Cllipus' theory by adding more spheres.

who is the father of modern geometry?

Attic is the ancient greek numeral system.

He believed sun lights moon & earth.

He is considered as first greek philosopher.

He proved the theorem that gives the sum and difference formulas for chords.

Sun Zi level up one leg of the gnomon and use the other leg as aplumb line.

This book is listed as the first and one of the most important of all the text included in the Ten Mathematical Classics