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The History of Trigonometry

Trigonometry

An exploration of the historical development and foundational mathematical discoveries in trigonometry.

history mathematics astronomy
18 Questions Hard Ages 16+ Sep 19, 2026

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About this Study Set

This study set covers Trigonometry through 18 practice questions. An exploration of the historical development and foundational mathematical discoveries in trigonometry. Every question includes the correct answer so you can learn as you go β€” pick any format above to get started.

Questions & Answers

Browse all 18 questions from the The History of Trigonometry study set below. Each question shows the correct answer β€” select a study format above to practice interactively.

1 Which ancient civilization is credited with the earliest development of a rudimentary trigonometric system based on the shadow lengths of a gnomon?
  • A Ancient Egypt
  • B Babylonia
  • C Ancient Greece
  • D Indus Valley
2 The 'Plimpton 322' clay tablet, which contains a sophisticated list of Pythagorean triples, originates from which era?
  • A Old Babylonian period
  • B Neo-Assyrian period
  • C Achaemenid Empire
  • D Hellenistic period
3 Who is historically regarded as the 'father of trigonometry' for his compilation of the first known trigonometric table, the 'Table of Chords'?
  • A Euclid
  • B Archimedes
  • C Hipparchus
  • D Ptolemy
4 In his treatise 'Almagest', which mathematician utilized the chord function based on a circle of radius 60 to calculate astronomical positions?
  • A Claudius Ptolemy
  • B Diophantus
  • C Theon of Alexandria
  • D Heron
5 The transition from the chord-based system to the sine-based system is primarily attributed to which Indian mathematician's work, 'Aryabhatiya'?
  • A Brahmagupta
  • B Bhaskara I
  • C Aryabhata
  • D Varahamihira
6 The Sanskrit term 'jya' (chord) was mistranslated into Arabic as 'jiba', which eventually evolved into the modern term 'sine' through which language?
  • A Latin
  • B Greek
  • C Persian
  • D Hebrew
7 Which 10th-century mathematician was the first to define the six trigonometric functions as ratios of sides of right-angled triangles rather than as chords in circles?
  • A Al-Khwarizmi
  • B Al-Battani
  • C Abu al-Wafa al-Buzjani
  • D Ibn al-Haytham
8 The 'Sphaerica', a foundational text on spherical trigonometry, was authored by which Greek mathematician?
  • A Menelaus of Alexandria
  • B Apollonius
  • C Eudoxus
  • D Zenodorus
9 In 1593, which mathematician introduced the term 'trigonometria' in the title of his published work?
  • A Nicolaus Copernicus
  • B Bartholomaeus Pitiscus
  • C Johannes Kepler
  • D Francois Viete
10 Which mathematician is credited with the first systematic use of the tangent function in the 10th century for calculating the heights of objects?
  • A Al-Biruni
  • B Al-Marwazi
  • C Omar Khayyam
  • D Sharaf al-Din al-Tusi
11 Regiomontanus, a key figure in the development of European trigonometry, wrote which comprehensive text that separated trigonometry from astronomy?
  • A De Triangulis omnimodis
  • B Canon Doctrinae Triangulorum
  • C Tabulae Directionum
  • D Opus Palatinum
12 The law of cosines, as applied in its modern form to all triangles, was historically synthesized through the work of which French mathematician?
  • A Pierre de Fermat
  • B Blaise Pascal
  • C Francois Viete
  • D Gilles Personne de Roberval
13 Which mathematician utilized the infinite series for sine and cosine, now known as Taylor series, long before Taylor's formal publication?
  • A Madhava of Sangamagrama
  • B Bhaskara II
  • C Parameshvara
  • D Nilakantha Somayaji
14 Who was the first mathematician to use the modern notations for sine, cosine, and tangent in his textbooks?
  • A Leonhard Euler
  • B Isaac Newton
  • C John Wallis
  • D Abraham de Moivre
15 The term 'secant' was introduced into the trigonometric vocabulary by which Danish mathematician in the 16th century?
  • A Tycho Brahe
  • B Thomas Fincke
  • C Ole RΓΈmer
  • D Caspar Wessel
16 Which Islamic scientist calculated the sine of one degree with high precision by solving a cubic equation?
  • A Al-Kashi
  • B Nasir al-Din al-Tusi
  • C Ibn Yunus
  • D Al-Farabi
17 In 1748, which seminal work did Leonhard Euler publish that established the modern analytical approach to trigonometry using exponential functions?
  • A Institutiones Calculi Differentialis
  • B Introductio in analysin infinitorum
  • C Elements of Algebra
  • D Methodus Inveniendi
18 The first known use of 'sin' as an abbreviation in English language mathematical literature appeared in a work by which mathematician?
  • A William Oughtred
  • B Edmund Gunter
  • C Henry Briggs
  • D John Napier
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