Question: The simultaneous applications of signals x (t) and y (t) to the horizontal and vertical plates respectively, of an oscilloscope, produce a vertical figure of 8 displays. If P and Q are constants and x(t) = P sin (4t + 30), then y(t) is equal to _________
Options
A : Q sin (4t -30)
B : Q sin (2t +15)
C : Q sin (8t +60)
D : Q sin (4t +30)
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