arc cosine

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arc cosine

n.
The inverse of the cosine function.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.arc cosine - the inverse function of the cosine; the angle that has a cosine equal to a given number
circular function, trigonometric function - function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle