👉 Secos is a mathematical function in trigonometry that represents the secant of an angle. It is denoted by the symbol "sec" and it's defined as the reciprocal of cosine or sine, i.e., sec(x) = 1/cos(x). For example: - Sec(30°) = 1/sin(30°) - Sec(-60°) = 1/cos(-60°) This function is used in various fields such