What is another word for arc cosine?
Pronunciation: [ˈɑːk kˈə͡ʊsa͡ɪn] (IPA) 
"Arc cosine", also known as the "inverse cosine", is a mathematical function used to determine the angle in a right-angled triangle where the adjacent side is divided by the hypotenuse. This concept is often used in trigonometry and geometry. Synonyms for "arc cosine" include "inverse cosine function", "cosine inverse", or simply "acos". These terms are used interchangeably to refer to the same mathematical concept. In addition, "arc cos" and "cos^-1" are other common notations used to represent the inverse cosine function. Overall, it is important to understand the meaning and usage of these synonyms in order to effectively solve mathematical problems involving trigonometry and geometry.
