Duplicate of HELLENISTIC, GREEK AND INCIENT AND MEDIEVAL CHINA

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

who is the father of modern geometry?

He discovered obliquity of ecliptic.

Attic is the ancient greek numeral system.

Heraclides modified Cllipus' theory by adding more spheres.

He believed sun lights moon & earth.

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

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

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.

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

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

He is considered as first greek philosopher.

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

He made his owm astronomical observations and recommemded ne calendar.