sin 𝑥 = 𝑎 - 𝑥 = (− 1)𝑛·arcsin 𝑎 + ℼ𝑛, 𝑛 ∈ 𝑍, cos 𝑥 = 𝑎 - 𝑥 = ± arccos 𝑎 + 2ℼ𝑛, 𝑛 ∈ 𝑍, tg 𝑥 = 𝑎 - 𝑥 = arctg 𝑎 + ℼ𝑛, 𝑛 ∈ 𝑍, ctg 𝑥 = 𝑎 - 𝑥 = arcctg 𝑎 + ℼ𝑛, 𝑛 ∈ 𝑍, sin 𝑥 = 1 - 𝑥 = ℼ/2 + 2ℼ𝑛, 𝑛 ∈ 𝑍, sin 𝑥 = -1 - 𝑥 = 3ℼ/2 + 2ℼ𝑛, 𝑛 ∈ 𝑍, sin 𝑥 = 0 - 𝑥 = ℼ𝑛, 𝑛 ∈ 𝑍, cos 𝑥 = 1 - 𝑥 = 2ℼ𝑛, 𝑛 ∈ 𝑍, cos 𝑥 = -1 - 𝑥 = ℼ + 2ℼ𝑛, 𝑛 ∈ 𝑍, cos 𝑥 = 0 - 𝑥 = ℼ/2 + ℼ𝑛, 𝑛 ∈ 𝑍,

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