{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T01:10:10Z","timestamp":1783905010606,"version":"3.55.0"},"reference-count":0,"publisher":"Walter de Gruyter GmbH","issue":"4","license":[{"start":{"date-parts":[[2014,12,1]],"date-time":"2014-12-01T00:00:00Z","timestamp":1417392000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014,12,1]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:p>We calculate the values of the trigonometric functions for angles: [XXX] , by [16]. After defining some trigonometric identities, we demonstrate conventional trigonometric formulas in the triangle, and the geometric property, by [14], of the triangle inscribed in a semicircle, by the proposition 3.31 in [15]. Then we define the diameter of the circumscribed circle of a triangle using the definition of the area of a triangle and prove some identities of a triangle [9]. We conclude by indicating that the diameter of a circle is twice the length of the radius<\/jats:p>","DOI":"10.2478\/forma-2014-0031","type":"journal-article","created":{"date-parts":[[2015,6,16]],"date-time":"2015-06-16T13:39:57Z","timestamp":1434461997000},"page":"313-319","source":"Crossref","is-referenced-by-count":0,"title":["Some Facts about Trigonometry and Euclidean Geometry"],"prefix":"10.2478","volume":"22","author":[{"given":"Roland","family":"Coghetto","sequence":"first","affiliation":[{"name":"Rue de la Brasserie 5 7100 La Louvi`ere, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"374","published-online":{"date-parts":[[2014,12,31]]},"container-title":["Formalized Mathematics"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/content.sciendo.com\/view\/journals\/forma\/22\/4\/article-p313.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/reference-global.com\/pdf\/10.2478\/forma-2014-0031","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T00:35:08Z","timestamp":1783902908000},"score":1,"resource":{"primary":{"URL":"https:\/\/reference-global.com\/article\/10.2478\/forma-2014-0031"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,12,1]]},"references-count":0,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2014,12,31]]},"published-print":{"date-parts":[[2014,12,1]]}},"alternative-id":["10.2478\/forma-2014-0031"],"URL":"https:\/\/doi.org\/10.2478\/forma-2014-0031","relation":{},"ISSN":["1898-9934"],"issn-type":[{"value":"1898-9934","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,12,1]]}}}