Mathematics & Computer Science
Early trigonometric identities
6th c. CEVarahamihiraPancha-SiddhantikaPan-Indian / unspecified
501 CE
Basic trigonometric relations, including a form of sin^2 + cos^2 = 1.
- Dated
- 501–600 CE
- As scholars put it
- 6th c. CE
- Originator
- Varahamihira
- Source text
- Pancha-Siddhantika
- Region
- Pan-Indian / unspecified
- Discipline
- Mathematics & Computer Science
- Evidence
- Documented
- Confidence
- High
- Verification
- Reference-cited
Meanwhile in the West
Systematic trigonometric identities in later Western maths.
Fair to say
Expressed in the era's chord/half-chord terms.
Path to modern innovation
Trigonometric identities are foundational across science.
Transmission
Independent development.
Primary sources
- 4Panchasiddhantika.Unreviewed
- 5The Panchasiddhantika The Astronomical Work Of Varaha MihiraUnreviewed
References
- 1Pancha-Siddhantika
- 2MacTutor history of maths
Further reading
Corrections and additional sources: edit IND-085 on GitHub.