Difference between Arccosine and Arccos

What is the difference between Arccosine and Arccos?

Arccosine as a noun is any of several single-valued or multivalued functions that are inverses of the cosine function. symbol: arccos, cos-1 while Arccos as an abbreviation is the inverse cosine function

We hope you now know whether to use Arccosine or Arccos in your sentence.