The transverse displacement of an harmonic wave on a stretched rope is y = 0.04 cos(2.5 x - 5 t), where x and y are in meters and t is in seconds. a) What is the amplitude of this wave? A = m * .04 OK b) What is the wavelength of this wave? c) What is the speed with which this wave travels? d) In what direction is this wave propagating? +x e) What is the frequency (NOT the angular frequency) of this wave? f = s-1 First off i need to find the wavelength. i am not sure where to start. in terms of the equation they gave me, idk how i can use that becuase it has 3 variables in stead of 2 so i cant plot it to figure out the wave length.. any ideas?