Question: what is the inverse natural function of the cosecant?
Answer: The inverse cosecant function - arccsc For every trigonometry function such as csc, there is an inverse function that works in reverse. These inverse functions have the same name but with 'arc' in front. So the inverse of csc is arccsc etc. When we see "arccsc A", we interpret it as "the angle whose cosecant is A".