arccosine
英
['ɑːkəʊsɪn]
美
['ɑːkəʊsɪn]
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Noun:
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the inverse function of the cosine; the angle that has a cosine equal to a given number
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用作名词 (n.)
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The inverse function of that restricted cosine function is called the arccosine function.
被限定的余弦函数之反函数叫做反余弦函数。
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