@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

psr:-Z8FC7K6H-7
  skos:prefLabel "cosinus"@fr, "cosine"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr: a skos:ConceptScheme .
psr:-RX61SX55-G
  skos:prefLabel "triangle"@fr, "triangle"@en ;
  a skos:Concept ;
  skos:related psr:-JL9Z4260-Z .

psr:-CHVKK7N5-G
  skos:prefLabel "law of tangents"@en, "loi des tangentes"@fr ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-R3S4N2R3-S
  skos:prefLabel "angle"@en, "angle"@fr ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-SKV40006-N
  skos:prefLabel "cotangent"@en, "cotangente"@fr ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-JL9Z4260-Z
  skos:narrower psr:-X5T7H86P-S, psr:-TZMFBR04-Q, psr:-HXW20HTQ-1, psr:-Q1R81VH6-M, psr:-SBW2GBQG-M, psr:-SKV40006-N, psr:-Z8FC7K6H-7, psr:-R3S4N2R3-S, psr:-LSF2Q70V-R, psr:-CHVKK7N5-G, psr:-KJMKDP2P-2, psr:-L68XPGK4-V, psr:-JFWL30R3-5, psr:-MG096TQ9-9, psr:-B7HW69DB-5 ;
  skos:inScheme psr: ;
  skos:definition """Trigonometry (from Ancient Greek τρίγωνον (trígōnon) 'triangle', and μέτρον (métron) 'measure') is a branch of mathematics concerned with relationships between angles and ratios of lengths. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies. The Greeks focused on the calculation of chords, while mathematicians in India created the earliest-known tables of values for trigonometric ratios (also called trigonometric functions) such as sine. 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Trigonometry">https://en.wikipedia.org/wiki/Trigonometry</a>)"""@en, """La trigonométrie (du grec τρίγωνος / trígonos, « triangulaire », et μέτρον / métron, « mesure ») est une branche des mathématiques qui traite des relations entre distances et angles dans les triangles et des fonctions trigonométriques telles que sinus, cosinus, tangente. 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/Trigonom%C3%A9trie">https://fr.wikipedia.org/wiki/Trigonom%C3%A9trie</a>)"""@fr ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Trigonometry>, <https://fr.wikipedia.org/wiki/Trigonom%C3%A9trie> ;
  skos:prefLabel "trigonométrie"@fr, "trigonometry"@en ;
  a skos:Concept ;
  skos:broader psr:-GKWK9C3G-P ;
  skos:related psr:-RX61SX55-G .

psr:-MG096TQ9-9
  skos:prefLabel "sine"@en, "sinus"@fr ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-SBW2GBQG-M
  skos:prefLabel "trigonometric identity"@en, "identité trigonométrique"@fr ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-TZMFBR04-Q
  skos:prefLabel "loi des cotangentes"@fr, "law of cotangents"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-GKWK9C3G-P
  skos:prefLabel "géométrie euclidienne"@fr, "Euclidean geometry"@en ;
  a skos:Concept ;
  skos:narrower psr:-JL9Z4260-Z .

psr:-Q1R81VH6-M
  skos:prefLabel "substitution trigonométrique"@fr, "trigonometric substitution"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-HXW20HTQ-1
  skos:prefLabel "formule d'Euler"@fr, "Euler's formula"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-X5T7H86P-S
  skos:prefLabel "loi des cosinus"@fr, "law of cosines"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-L68XPGK4-V
  skos:prefLabel "tangente"@fr, "tangent"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-KJMKDP2P-2
  skos:prefLabel "intégrale trigonométrique"@fr, "trigonometric integral"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-LSF2Q70V-R
  skos:prefLabel "sinus polaire"@fr, "polar sine"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-JFWL30R3-5
  skos:prefLabel "radian"@en, "radian"@fr ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .

psr:-B7HW69DB-5
  skos:prefLabel "loi des sinus"@fr, "law of sines"@en ;
  a skos:Concept ;
  skos:broader psr:-JL9Z4260-Z .