15.2 Докажите тождество
Пример из темы “Преобразование тригонометрических выражений“
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![➤ Warhammer 40,000: Space Marine 2 [ Прохождения ][ Второй отряд Тита][Баллистический состав][ №15 ]](https://sun9-25.userapi.com/EJ3aBFiO8mg7iOUABRkkPe0nlvK3FwsNEr4iOQ/QnDVlcbm4_w.jpg)
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