arcsine vs arcsin

arcsine and arcsin both are nouns.

Word	Noun	Adjective	Verb	Adverb
arcsine	Yes	No	No	No
arcsin	Yes	No	No	No

As nouns, arcsine and arcsin are synonyms defined as:

arcsine and arcsin: the inverse function of the sine; the angle that has a sine equal to a given number

Other synonyms of arcsine include arc sine, inverse sine.

arcsine (noun)	arcsin (noun)
the inverse function of the sine; the angle that has a sine equal to a given number	the inverse function of the sine; the angle that has a sine equal to a given number