👉 The term "sinoidal" is a combination of terms that refers to the relationship between sine and cosine functions. Sinusoidal function is a type of periodic function, which means that it repeats its values at regular intervals or periods. The most common examples of sinusoidal functions are sine and cosine functions, but other types of functions like tangent, cotangent, secant, cosecant, and so on also have the same mathematical properties as sine and cosine. In terms of trigonometry, sin