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Two simple harmonic motions are represen...

Two simple harmonic motions are represented by `y_(1)=5 [sin 2 pi t + sqrt(3)cos 2 pi t] and y_(2) = 5 sin (2pit+(pi)/(4))`
The ratio of their amplitudes is

A

1 : 1'

B

1 : 2'

C

2 : 1'

D

`1 : sqrt3`

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