A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds.
a) Determine the wavelength of this wave.
b) Determine the frequency of this wave.
c) Determine the speed of this wave.
d) Determine the amplitude of this wave.
f) Determine maximum and minimum speeds of particles of the cord.
Need help trying to understand this displacement formula(im guessing) cannot find any resemblance of this formula in the book. trying to determine what is in the parenthesis?