In mathematics education, precalculus is a course, or a set of courses, that includes algebra and trigonometry at a level which is designed to prepare students for the study of calculus. Schools often distinguish between algebra and trigonometry as two separate parts of the coursework.
Principia Cathedra the principals of the chair, from Latin cathedra, as a seat of authority and that which a cathedral's purpose is to indicate the location of such chair.
