Entry from British & World English dictionary
A mathematical function that is the inverse of the cosine function.
- 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.
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.