Timeline of Trigonometry

While the Egyptians and Babylonians laid foundations for trigonometry, it was the Greeks (Hipparchus) who produced the first known table of trigonometric values. Aristarchus was one of the first to measure angles.

-1900 – pi
-0300 – “Elements” – Euclid
-0310 – Aristarchus
-0150 – trigonometric chord tables – Hipparchus
0150 – “Almagest” – Ptolemy
0476 – “Aryabhatiya” – Aryabhata
0820 – “astronomical tables of Sind and Hind” – al-Khwarizmi
0850 – al-Battani
0989 – “The book of unknown arcs of a sphere” on spherical trigonometry – Al-Jayyani
1542 – “On the Sides and Angles of Triangles” – Rheticus
1545 – Ars Magna – cubic equations solved
1748 – “Introduction to the Analysis of the Infinite” – Euler
1754 – lunar tables computed using cosine series – Clairaut

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