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Sem090
@Sem090
July 2022
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1. Решите тригонометрическое уравнение:
а) 2sinx = корень из 2;
б) (2cos2x - 1) × (3ctgx + корень из 3) = 0
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mikael2
1. cos2x=1/2 2x=+-π/3+2πk x=π/6+πk k∈Z
2. ctgx=-√3/3 x=arcctg(-π/3)+πk=π-π/6+πk=5π/6+πk k∈Z
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Answers & Comments
2. ctgx=-√3/3 x=arcctg(-π/3)+πk=π-π/6+πk=5π/6+πk k∈Z