Two harmonic waves are described by

y_{1} = A sin(3 x - 5 t),

y_{2} = A sin(3 x - 5 t - 4),

where A = 22 m, with x and t being given in SI units and the phase angles in radians. What is the displacement of the wave produced by interference of these two waves at x = 1 m, t = 1 s?

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