In order to use inverse trigonometric functions, we need to understand that an inverse trigonometric function “undoes” what the original trigonometric function “does,” as is the case with any other function and its inverse.
Understanding and Using the Inverse Sine, Cosine, and Tangent Functions In this section, we will explore the inverse trigonometric functions. This is where the notion of an inverse to a trigonometric function comes into play. But what if we are given only two sides of a right triangle? We need a procedure that leads us from a ratio of sides to an angle.
