Tanu Wijaya T, Ying Z, Purnama A. Using Hawgent Dynamic Mathematic Software in Teaching Trigonometry. Int. J. Emerg. Technol. Learn. [Internet]. 2020 Jun. 1 [cited 2024 Nov. 22];15(10):pp. 215-222. Available from: https://online-journals.org/index.php/i-jet/article/view/13099