Two traveling sinusoidal waves are described by the wave functions y1 = − (5 m) sin[π(4.0x - 12t) ] and y2 = (5 m) sin [ π(4.0 x - 12 t - 0.25 where x, y1 & y2 are in meters and t is in seconds. Which of the following statements are correct
(a) The resultant amplitude is 9.24 m
(b) The resultant amplitude is 10 m
(c) The frequency of the resultant wave is 6 Hz
(d) The frequency of the resultant wave is 4 Hz