Definition of "arccosine" [arccosine]

• Any of several single-valued or multivalued functions that are inverses of the cosine function. Symbol: arccos, cos-1 (noun)

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• "The inverse of the cosine function is the arccosine function."
• "Graph of the hyperbolic arccosine function. arccosine function is limited to the non-negative reals, that is, to real numbers y such that y!"
• "The range of the arccosine function is limited to values of y between, and including, 0 and"