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A block is doing SHM its displacement fr...

A block is doing SHM its displacement from mean position is given by `x(t)= A sin(wt) + Bcos(wt)` if at t= 0 x = 0 displacement `x(t)= C cos(wt- phi)` then find value of C and `phi`

A

` sqrt(A^2 + b^2), pi/2`

B

` sqrt(A^2 + b^2), 0`

C

` A^2 + b^2, pi/2`

D

` A^2 + b^, 0`

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