Abstract:This study aims to determine the quality of mathematical items on the topic of Trigonometry. The items are pretest/posttest questions that have been tested on class XI students who have studied the topic of Trigonometry. The research method used is descriptive quantitative method. The data collection technique used the statistical application of the Anates 4.05 program. Based on the data analysis, it was found that the validity of the questions was categorized as good and very good. In addition, the test relia… Show more
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