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trigonometric identity

equation that is true for right triangles
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trigonometric identity

Summary

Key Facts

  • trigonometric identity is a type of identity[1].
  • trigonometric identity's Commons category is recorded as Trigonometric identities[2].
  • trigonometric identity comprises half-angle formula[3].
  • trigonometric identity comprises double angle formula[4].
  • trigonometric identity comprises Pythagorean trigonometric identity[5].
  • trigonometric identity comprises prosthaphaeresis formula[6].
  • trigonometric identity's described by source is recorded as Armenian Soviet Encyclopedia[7].
  • trigonometric identity's has list is recorded as list of trigonometric identities[8].

Body

Definition and Type

trigonometric identity is a type of identity[1].

Use and Application

Components include half-angle formula[3], a theorem[9]; double angle formula[4]; Pythagorean trigonometric identity[5], a theorem[10]; and prosthaphaeresis formula[6].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] ↑ . wikidata.org.
  2. [2] ↑ . wikidata.org.
  3. [3] ↑ . wikidata.org.
  4. [4] ↑ . wikidata.org.
  5. [5] ↑ . wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . wikidata.org.
  8. [8] ↑ . wikidata.org.

Inline context (facts about related entities)

  1. [9] ↑ . Wikidata. wikidata.org. → on this site
  2. [10] ↑ . Wikidata. wikidata.org. → on this site

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). trigonometric identity. Retrieved May 7, 2026, from https://4ort.xyz/entity/trigonometric-identity
MLA “trigonometric identity.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/trigonometric-identity.
BibTeX @misc{4ortxyz_trigonometric-identity_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{trigonometric identity}}, year = {2026}, url = {https://4ort.xyz/entity/trigonometric-identity}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): trigonometric identity — https://4ort.xyz/entity/trigonometric-identity (retrieved 2026-05-07)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 22d ago · KrBot bot · 2026-06-23 view diff on Wikidata ↗
    Described by source → Armenian Soviet Encyclopedia
    "/* wbremoveclaims-remove:1| */ [[Property:P1343]]: [[Q123384147]], дублирующееся значение / duplicate value"
  2. 26d ago · AddyLockPool · 2026-06-20 view diff on Wikidata ↗
    Described by source → Armenian Soviet Encyclopedia
    "/* wbsetclaim-create:2||1 */ [[Property:P1343]]: [[Q101029942]]"
  3. 26d ago · AddyLockPool · 2026-06-20 view diff on Wikidata ↗
    Wikidata description → equation that is true for right triangles
    Described by source → Armenian Soviet Encyclopedia
    Described at url → https://www.mathwords.com/t/trig_identities.htm
    "/* wbsetclaim-create:2||1 */ [[Property:P1343]]: [[Q123384147]]"
  4. 5w ago · AddyLockPool · 2026-06-05 view diff on Wikidata ↗
    Subclass of → identity
    Brilliant wiki id → proving-trigonometric-identities, fundamental-trigonometric-identities-problem
    Jstor topic id (archived) → trigonometric-identities
    Wikidata description → equation that is true for right triangles
    + 8 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P1343]]: [[Q123384147]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.