#11. 기본정석 수학1 │ 9단원 삼각함수의 그래프(1)

──Notice regarding the sale of Instructor Kim Kang-yong's [Prep for School Exams and CSAT] textbooks── If you would like to access Instructor Kim Kang-yong's unreleased lectures, please purchase the paid textbooks immediately. Leading students and instructors have already purchased them to improve their skills. ▶Please click the link below for information on purchasing the paid textbooks. https://blog.naver.com/dos20011/22165... ▶ Kim Kang-yong's Instagram : https://www.instagram.com/tomomath/?h... ▶ Apply for Paid Textbooks : [email protected] ▶ Premium Personalized Class Guide https://blog.naver.com/dos20011/22331... ▶ Add Kakao Channel http://pf.kakao.com/_FgzPG If you add the Kakao Channel, you can be the first to see news about new textbook publications, math materials, unreleased lectures, and more. Seojin Publishing Business Registration No. : 753-15-00151 Mail Order Business Registration No. : 2020-Seoul Seocho-4128