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dimahong15
@dimahong15
June 2022
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Помогите решить уравнения!Срочно!Буду благодарна!Срочно
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sharadi
Verified answer
1) Сosx = 1/√2
x = +-arcCos1/√2 + 2πk , k ∈Z
x = +-π/4 + 2πk , k ∈Z
2) tg2x = -√3/3
2x = arctg(-√3/3) + πk , k ∈Z
2x = -π/6 + πk , k ∈ Z
x = -π/12 + πk/2 , k ∈Z
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Answers & Comments
Verified answer
1) Сosx = 1/√2x = +-arcCos1/√2 + 2πk , k ∈Z
x = +-π/4 + 2πk , k ∈Z
2) tg2x = -√3/3
2x = arctg(-√3/3) + πk , k ∈Z
2x = -π/6 + πk , k ∈ Z
x = -π/12 + πk/2 , k ∈Z