Pre-Cal Math Course is a course that covers topics such as trigonometry, which is the study of triangles and their properties. Trigonometry is abbreviated as TRIG, which is a four letter word that is often used in crossword puzzles. Pre-Cal Math Course is a prerequisite for many higher level math courses, such as Calculus. It is important for students to understand the fundamentals of trigonometry before they can move on to more advanced mathematics.