Final answer:
The provided question regarding the Fourier series coefficients for a discrete time signal requires using trigonometric identities and the general form of the discrete-time Fourier series but the provided references do not match the question and thus cannot be used to answer it.
Step-by-step explanation:
To determine the Fourier series coefficients for the given discrete time signal x[n]=cos(2π/3n)cos(2π/4n), we need to apply trigonometric identities and formulae for Fourier series of discrete time signals. however, since the provided references are about continuous time wave functions and their properties like wave number, angular frequency, and phase shift, they do not directly give us the coefficients for the discrete time signal in question.
This discrepancy suggests that the references given do not match the question asked, and therefore it is not appropriate to attempt to apply them in this case. a correct answer would require the application of the product-to-sum identities to simplify the expression of x[n], followed by deriving the coefficients from the general form of the discrete-time Fourier series.