Precalculus by Richard Wright

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Chapter 11: Analytic Geometry in Three Dimensions

Much what is taught in high school and introductory college mathematics is concerned with only two dimensions. Most equations in this book are two variable, x and y. However, the real world is in three dimensions. Vectors are useful for describing properties of three-dimensional objects.

11-01 3-D Coordinate System

11-02 Vectors In Space

11-03 Cross Products

11-04 Lines and Planes in Space