2. The expression of a stationary wave is given by y = 0.3 cos 0.51x sin 60
Where y and x in meters and t is in seconds.
i. Write the expression for two progressive waves resulting the stationary wave above.
ii. Determine the wavelength, frequency, amplitude, and velocity for both progressive waves.
[Ans: 4 m, 30 Hz, 0.15 m, 120 m s']

Please help me i have a test tomorrow and i haven’t sleep yet because of this work