A pair of noise processes n1 (t) and n2 (t) are related by n2 (t) = n1 (t) cos (2?fct + ?) - n1 (t) sin (2?fct + ?). Where fc is a constant and ? is the value of a random variables ? whose probably density function is defined by, the noise process n2 (t) is stationary and its power spectral density is as shown in Figure. Find and plot the corresponding power spectral density of n2 (t).

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