This book aims to provide a comprehensive understanding of trigonometry for self-learners. Authored by Hugh Neill, it is designed to guide readers through the fundamental concepts, theorems, and applications of trigonometry. The text likely covers topics such as angles, triangles, trigonometric functions, identities, and their use in solving various mathematical and real-world problems, presented in a structured, pedagogical manner.

The book is structured as a self-teaching guide, suggesting it is intended for individuals seeking to learn trigonometry independently. Its focus on fundamental principles and practical applications indicates an approach that balances theoretical knowledge with problem-solving utility. The inclusion of exercises points to a pedagogical design aimed at reinforcing learning through practice. The overall framing suggests a resource suitable for students or enthusiasts needing a clear and structured introduction to the subject.