Wave motionHard
Question
Two wave are represented by equation
y1 = a sin ωt
y2 = a cos ωt
the first wave -
y1 = a sin ωt
y2 = a cos ωt
the first wave -
Options
A.leads the second by π
B.lags the second by π
C.leads the second by 
D.lags the second by
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