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Download full textMaknun, Churun Lu'lu'il; Rosjanuardi, Rizky; Jupri, Al – International Electronic Journal of Mathematics Education, 2020
A Trigonometric function is one of the challenging materials for not only high school students but also pre-service teachers and teachers. On the other hand, An understanding of trigonometric function is an initial stage in understanding calculus derived from it such as limit, derivative, and integral. Thus, the competency in trigonometric…
Descriptors: Trigonometry, Mathematics Instruction, Design, Graphs
