A system defined by is initially at rest, and x = u(t) sin 2t then th – McqOptions

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1.	A system defined by is initially at rest, and x = u(t) sin 2t then the forced response is K sin (2t - Œ∏). The value of Œ∏ given by
A.	-tan-1(1)
B.	-tan-1(2)
C.
Answer» C.

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