👉 In mathematics, an orthogonal function is a function that is orthogonal to all other functions. This means that if we have two functions f and g, then |f(x)|^2 + |g(x)|^2 = 1 for all x in their domain. In other words, the square of the distance between any pair of points on the graph of these functions is always equal to 1. Orthogonality plays a crucial role in many areas of mathematics, including trigonometry and