Welcome to Precalculus, a detailed and comprehensive book. This textbook was written to increase student access to high-quality learning materials, maintaining the highest standards of academic rigour at little to no cost.Precalculus is adaptable and designed to fit the needs of a variety of precalculus courses. It is a comprehensive text that covers more ground than a typical one- or two-semester college-level precalculus course. The content is organized by clearly-defined learning objectives and includes worked examples that demonstrate problem-solving approaches in an accessible way.All possible effort has been made to make this book free from any printing error but such mistakes are unavoidable. Reference with examples and proper illustrations are given where necessary for better understanding. Links to the webare also given for further study.The book - “Precalculus” is very adaptable and designed to fit the needs of a variety of precalculus courses. With every set of problems, examples and relevant illustrations are given for better understanding and concept building.It is a comprehensive text that covers more ground than a typical one- or two-semester college-level precalculus course. The content is organized by clearly-defined learning objectives and includes worked examples that demonstrate problem-solving approaches in an accessible way.