Question one 1. The problem statement, all variables and given/known data x[n] = 5sin(0.22*pi) The root mean square (RMS) value eof a sin wave is known to be A/root(2) where A is the amplitude. If the noise in a system is known to have an RMS value of 0.5, what si the signal to noise ration (in dB) of the x[n] in this syetem. 2. Relevant equations RMS = A/root(2) SNR = (Asignal/Anoise)^2 SNRdB = 10log10(SNR) 3. The attempt at a solution Well, i figured that "A" for the RMS given (0.5) is root(2)/2 However, i do not know that which A is Asignal and which is Anoise (root(2)/2 or 5*sin(.22*pi) or just 5).