Definition of arc tangent in English:

arc tangent

Line breaks: arc tan|gent
Pronunciation: /ˈɑːktan(d)ʒ(ə)nt
(abbreviation: arctan)


A mathematical function that is the inverse of the tangent function.
More example sentences
  • In the 14th century, Madhava, isolated in South India, developed a power series for the arc tangent function, apparently without the use of calculus, allowing the calculation of pi to any number of decimal places.
  • When we find an arctan of a reciprocal of an even-indexed Fibonacci number, we can use to replace it by a sum of two terms, one an odd-indexed Fibonacci number and another even-indexed Fibonacci number.
  • We can put this in words as ‘The final arctan is just 1 more than the product of the other two (whose denominators differ by one).’

Definition of arc tangent in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day anastrophe
Pronunciation: əˈnastrəfi
the inversion of the usual order of words...