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Karinacheese
@Karinacheese
October 2021
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Вычислить а) ctg(-30), б) 4sin П/6 + 3tg^2 П/4 + ctg П/4 + 2cos П/3, в) 8sin П/8 cos П/8 - 2 cos П/4
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ekaterinagild
А)ctg(-30) = -ctg30 = -
б)4sinП/6 + 3tg^2П/4 + 2cosП/3=4sin30+3tg^2 45 + ctg45 + 2 сos60 = 4 1/2 + 3 + 1 + 2 1/2 = 2+3+1+1= 7
в) П/8 не знаю((
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Answers & Comments
б)4sinП/6 + 3tg^2П/4 + 2cosП/3=4sin30+3tg^2 45 + ctg45 + 2 сos60 = 4 1/2 + 3 + 1 + 2 1/2 = 2+3+1+1= 7
в) П/8 не знаю((