Question: A cosine wave voltage signal has a 10V RMS value and 60Hz frequency. Also at time, t=0, the value of the voltage signal is equal to its RMS value. Which of the following is the correct mathematical representation of the voltage signal?
Options
A : 10 cos(60t)
B : 10 cos (120?t)
C : 14.14 cos(60t + ?/4)
D : 14.14 cos(120?t + ?/4)
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