This text investigates the fundamental principles of trigonometry required for technical and vocational applications. Thomas J. McHale, drawing on his experience within the Milwaukee Area Technical College mathematics curriculum, presents a structured approach to trigonometric functions, identities, and their practical utility. The book utilizes a modular framework designed to guide students through the logical progression of angular measurement and triangle analysis. It serves as a foundational resource for learners needing to apply mathematical concepts to engineering and technical fields.

This text is recognized as a standard instructional tool for technical college students seeking a clear, step-by-step introduction to trigonometry. Educators often highlight the practical focus of the exercises as a primary benefit for students in applied science programs.