a) Using the superposition principle find the resultant of the complex wave f(t) = A+B, where A= 3 sin (2wt), and B has the frequency part, 4 times of w and the amplitude same as A li.e. X sin (8wt), where X- is the amplitude] with the additional phase of TI/2 compared to wave A. Depict a clear diagram showing each of the waves with the resultant superposition in terms of time along with clear explanations. Also, show the resultant complex wave mathematically. [5Marks] are unit vectors of 3D