The Inverse Sine Function
Since sine is not a one-to-one function, the domain must be limited to -pi/2 to pi/2, which is called the restricted sine function. The inverse sine function is written as sin^-1(x) or arcsin(x). Inverse functions swap x- and y-values, so the range of inverse sine is -pi/2 to /2 and the domain is -1 to 1. When evaluating problems, use identities or start from the inside function.