Question

Determine Trig Fourier series coefficients (aₙ) and (bₙ) as well as radian frequency (ω) for (x(t) = cos(7π t)).

a) (aₙ = 0), (bₙ = 0), (ω = 7π)
b) (aₙ = 0), (bₙ = 1), (ω = 7π)
c) (aₙ = 1), (bₙ = 0), (ω = 7π)
d) (aₙ = 1), (bₙ = 1), (ω = 7π)