IDRIS M, SHIDDIQ MM, ERIDANI E. AN AREA OF RIGHT TRIANGLE FOR TRIGONOMETRY. Jurnal Matematika UNAND [Internet]. 2023 Oct. 21 [cited 2026 Nov. 4];12(4):267-75. Available from: https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/1072