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COURSE FOR GRADE 10 IN MATHEMATICS - https://vk.cc/cAOrxo ???? #reductionformulas #trigonometry In this lesson, we will analyze reduction formulas from scratch in 15 minutes and learn how to solve a couple of tasks from the specialized Unified State Exam in mathematics. Follow the link and register for the free summer school - https://vk.cc/cfpuGR Free materials to prepare for the OGE - https://vk.cc/cfpAmB Telegram - https://t.me/molodoy_repet Tik Tok - / molodoy_repet VKontakte OGE - https://vk.com/oge_100pointsrepetitor VKontakte Unified State Exam - https://vk.com/stopointerschool Finished 9th grade and are you looking for cool content to pull in the Unified State Exam? My partners know how to prepare for high scores! Follow the link to choose an item - https://vk.cc/cepBbR