<![CDATA[The development of effective assessment instruments is an important element in the learning process, especially to support the achievement of educational goals. In the context of mathematics learning, especially in trigonometric comparison material, well-designed assessment instruments can help students develop critical thinking and problem solving skills. The aim of this research is to analyze the need for developing a website-based trigonometry comparison problem solving ability assessment instrument. The research method used is a qualitative method. The research subjects were mathematics teachers and MA students in one of the Ogan Komering Ilir districts. The research instruments used were teacher interviews, observations, and distributing questionnaires to students to determine the needs analysis for developing website-based problem solving ability instruments. Data were analyzed descriptively based on the results of interviews, observations and questionnaires. The research found that teachers do not yet have a CBT Web-based instrument for assessing their trigonometry comparison problem solving abilities. Teachers realize the importance of developing CBT Web-based problem-solving ability assessment instruments, but are constrained by not having the ability to develop CBT Web-based problem-solving ability instruments. The majority of students also realize the importance of a CBT Web-based trigonometry comparison problem-solving ability assessment instrument. Therefore, it can be concluded that it is necessary to develop a CBT Web-based instrument for assessing the ability to solve trigonometry comparison problems for MA students.]]>
