Two sinusoidal waves in a string are defined by the functions
y1 = (2.00 cm) sin (20.0x ─ 32.0t)
And
y2 = (2.00 cm) sin (25.0x ─ 40.0t)
Where y1, y2, and x are in centimeters and t is in seconds.
(a) What is the phase difference between these two waves at the point x = 5.00 cm at t = 2.00 s? (b) What is the positive x value closest to the origin for which the two phases differ by ± at t = 2.00 s? (This is where the two waves add to zero.)