U.S. Attorney Matt M. Dummermuth says the operation was the largest single-site immigration raid in U.S. history. Braley wants tally on immigration raids. Associated Press, May 21, 2008 DES MOINES, Iowa - U.S Rep. Bruce Braley wants to know the cost of Immigration raids at meatpacking plants.
The idea is the same in trigonometry. Inverse trig functions do the opposite of the âregularâ trig functions. Inverse sine (sinâ1)(\sin^{-1})(sinââ1ââ)left parenthesis, sine, start superscript, minus, 1, end superscript, right parenthesis does the opposite of the sine.
4. Replace y with f-1(x).  Inverse functions are usually written as f -1 (x) = (x terms) . Note that in this case, the -1 exponent doesn't mean we should perform an exponent operation on our function. It's just a way of indicating that this function is the inverse of our original.