Two waves are represented by the equations \[{{y}_{1}}=a\sin \omega t\ – McqOptions

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1.	Two waves are represented by the equations \[{{y}_{1}}=a\sin \omega t\] and \[{{y}_{2}}=a\cos \omega t.\] The first wave [MP PMT 2001]
A.	Leads the second by p
B.	Lags the second by p
C.	Leads the second by \[\frac{\pi }{2}\]
D.	Lags the second by \[\frac{\pi }{2}\]
Answer» E.

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