Definition of arc cosine in English:

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arc cosine

Pronunciation: /ˌɑːk ˈkəʊsʌɪn/
(abbreviation arcos)

noun

A mathematical function that is the inverse of the cosine function.
Example sentences
  • The arc cosine is the angle whose cosine is the specified number.
  • The following example returns the arc cosine of the value in radians.
  • The inverse functions of the sine and the cosine are called the arc sine arcsin and the arc cosine arccos, respectively.

For editors and proofreaders

Line breaks: arc co¦sine

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