The transfer function H(s) of a system is given by following equation. Given that understeady state conditions, the sinusoidal I/P and 0/P are respectively x(t) = cos 2t and y(t) = cos (2t + Φ), then the angle Φ will be

A . 45°

B . 0°

C . -45°

D . -90°

Solution Answer: Option C Answer: (c).-45°

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