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zhambulat
@zhambulat
July 2022
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Помогите cos x меньше или равно 1/2 и еще. Cos x больше или равно корень из 2/2
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ShirokovP
Verified answer
Cosx ≤ 1/2
pi/3 + 2pik ≤ x ≤ 5pi/3 + 2pik, k ∈Z
cosx ≥ √2/2
- pi/4 + 2pik ≤ x ≤ pi/4 + 2pik, k ∈Z
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Answers & Comments
Verified answer
Cosx ≤ 1/2pi/3 + 2pik ≤ x ≤ 5pi/3 + 2pik, k ∈Z
cosx ≥ √2/2
- pi/4 + 2pik ≤ x ≤ pi/4 + 2pik, k ∈Z