“METHODS OF PROVING SOME TRIGONOMETRIC IDENTITIES AND INEQUALITIES USING THE PROPERTIES OF GEOMETRICAL FORMS”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 14 (July 28, 2021): 74–80. Accessed June 3, 2026. http://www.turcomat.org/index.php/turkbilmat/article/view/10213.