Learning and mastering mathematics is important. However, the mastery of mathematics by Indonesian student is still low. According to math teacher grade X in SMAIT Nur Hidayah, trigonometry is the most difficult material for students. The research was conducted to describe the types of student errors in solving trigonometry story problems. The research subjects were 28 students of class X MIPA 4. This research includes qualitative research. Data obtained by test and interview methods. Errors were analyzed according to Newman’s Error Analysis (NEA). The results showed that students made five types of errors in solving trigonometric story problems. Students made the most mistakes in process skills errors. While the least error is comprehension errors and encoding errors.