Question

Two waves represented by y1=asin wt and y2=bcos wt have a phase difference of

Answer 1

they have π/2 phase difference

Answer 2

Phase difference = π / 2

Y1=Asinwt  

Y2=Acoswt  

Y = A( sinwt + coswt )  

coswt = sin ( 90+wt )  

Taking a common  

Y = A [ sin(wt) + sin(90+wt)]  

Y = A [ 2sin((2wt+90)/2)cos(90/2)]  

Y = A [√2sin(wt+45)]  

Y = √2Asin( wt + 45)