This manual is intended to accompany Algebra and Trigonometry, Third Edition, by Dennis G. Zill and Jacqueline M. Dewar. It consists of four parts, described below.Use of a Calculator This part is not intended to be a comprehensive manual on the use of a graphing calculator in a Precalculus course. While much of the material discussed will be pertinent to any graphing calculator, the references in this manual will be to the TI-84 family of calculators...