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bn:01010523n
Noun Concept
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In mathematics, the values of the trigonometric functions can be expressed approximately, as in cos ⁡ ≈ 0.707 {\displaystyle \cos\approx 0.707}, or exactly, as in cos ⁡ = 2 / 2 {\displaystyle \cos={\sqrt {2}}/2}. Wikipedia
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無理数

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