arc tangent vs arctan

arc tangent and arctan both are nouns.

Word	Noun	Adjective	Verb	Adverb
arc tangent	Yes	No	No	No
arctan	Yes	No	No	No

As nouns, arc tangent and arctan are synonyms defined as:

arc tangent and arctan: the inverse function of the tangent; the angle that has a tangent equal to a given number

Other synonyms of arc tangent include arctangent, inverse tangent.

arc tangent (noun)	arctan (noun)
the inverse function of the tangent; the angle that has a tangent equal to a given number	the inverse function of the tangent; the angle that has a tangent equal to a given number