sin(x)>0, x∈(0+2πк, π+2πк), cos x < 0, x ∈ (π/2 + 2πk, 3π/2 + 2πk), sin x ≤ 1, x ∈ R, cos x ≥ 0, x ∈ [-π/2 + 2πk, π/2 + 2πk], tg x > 0, x ∈ (0 + πk, π/2 + πk), ctg x < 0, x ∈ (π/2 + πk, π + πk), sin x ≥ 1/2, x ∈ [π/6 + 2πk, 5π/6 + 2πk], cos x ≤ -1/2, x ∈ [2π/3 + 2πk, 4π/3 + 2πk].

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