👉 The term "cosinusoid" is a mathematical concept that refers to a type of periodic function. A sinusoidal function is defined as a function whose graph has an amplitude and a frequency, but not necessarily both at any given point in time. The term "cosinusoid" comes from the Greek word "cosinus," which means sine, and "oid," which is Latin for "body." A sinusoidal function can be described by its period, frequency, phase shift, and other properties
