It turns out that arctan and cot are really separate things: cot(x) = 1/tan(x) , so cotangent is basically the reciprocal of a tangent, or, in other words, the multiplicative inverse. arctan(x) is the angle whose tangent is x.

Is arctan the same at cot?

Yes. cotx is the reciprocal, arctanx is the (principal) inverse, and arctanx=1tanx is incorrect.

What is another name for arctan?

Arctan synonyms

In this page you can discover 3 synonyms, antonyms, idiomatic expressions, and related words for arctan, like: arc tangent, arctangent and inverse tangent.