How can the phase difference of two particles executing simple harmonic motions ?

Explanation

Consider two particles executing simple harmonic motions. Their equations for displacement are
`Y_(1)=A sin (omega t+phi_(1)) and Y_(2) =A sin (omega t+phi_(2))` then the phase difference is given by `Delta phi`
`Delta phi=(omega t+phi_(2))-(omega t+phi_(1))`
`=phi_(2)=phi_(1)`