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제목42th LS(211207) Cosine rule (PDF 217)2021-12-08 10:15:09
작성자 Level 10

https://youtu.be/0_m7VkPVY5Q 

이전43th LS(211208) Sine rule (PDF 233) Level 102021-12-09
-42th LS(211207) Cosine rule (PDF 217) Level 102021-12-08
다음41th LS(211206) Trigonometric Graph (PDF 201) Level 102021-12-07