Предмет: Математика, автор: ellaan

решите пожалуйста, очень нужно

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Автор ответа: katyasineva99

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по формулам триг функций -2+tg^2a ответ

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My school life.
I would like to tell you a few words about my school life. I go to school five days a week except Saturday and Sunday. Classes in our school start at 8:30 o'clock in the morning and last until 15:00 o’clock. We usually have 6 or 7 lessons a day. We study many different subjects: Russian, English, History, Geography, Biology, Physics, Chemistry and Maths.
My favourite subject is English. At the lessons we read, write, play games, sing songs. We have English three times a week: on Monday, Wednesday and Friday. I like reading books. It is interesting to read books of English and American writers in the original. My favourite book is `The Jungle Book" by R. Kipling. I like watching cartoons in English.
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setlength(ar,s+1);
ar[s]:=inttostr(i)+','+inttostr(j);
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