Even though students can get this stuff on internet, they do not understand exactly what has been explained. The inverse of the tangent function will yield values in the 1 st and 4 th quadrants. Concept 2: Domain and Range of Inverse trig functions The inverse trig functions are _____ To construct inverse functions, we must have a property that our original functions are Is Sin 1-1 or not? These two quadrant are covered by the interval [0, Ï]. Function Domain Range y = sin(x) 1