“Trigonametrik funkciyalardıń anıqlamalarınan paydalanıp Berilgen teńliklerdi Esaplaw hám dálillew”. Modern education and development 5, no. 1 (July 5, 2024): 194–199. Accessed December 23, 2024. https://modernedu-dv.com/dv/article/view/38.