Geodesic
Trigonometry and problem solving in geometry
Matematičeskoe obrazovanie, Tome 101 (2022) no. 1, pp. 12-20.

Voir la notice de l'article provenant de la source Math-Net.Ru

In the article, using the example of a number of Olympiad problems, it is shown that a solution using trigonometry quickly and easily leads to an answer, while the possibility of finding a purely geometric solution is not obvious. 
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A. N. Afanasyev. Trigonometry and problem solving in geometry. Matematičeskoe obrazovanie, Tome 101 (2022) no. 1, pp. 12-20. http://geodesic.mathdoc.fr/item/MO_2022_101_1_a2/

[1] A. N. Afanasev, “Pyat reshenii odnoi izvestnoi zadachi”, Matematicheskoe obrazovanie, 2018, no. 3 (87), 2–7

[2] I. F. Sharygin, Zadachi po geometrii (Planimetriya), Bibliotechka “Kvant”, Nauka, M., 1986, 224 pp.

[3] P. Yui, Euclidean Geometry Notes, <ext-link ext-link-type='uri' href='http://math.fau.edu/Yiu/EuclideanGeometryNotes.pdf'>http://math.fau.edu/Yiu/EuclideanGeometryNotes.pdf</ext-link>

[4] S. V. Romanov, I. F. Sharygin, “Algebraicheskii metod resheniya geometricheskikh zadach”, Kvant, 1975, no. 11, 47–49