Two waves are given by y1 = a sin ( t - kx ) and y2 = a cos ( t - kx). The phase difference between them is

Two waves are given by y1 = a sin ( t - kx ) and y2 = a cos ( t - kx).

1.	Two waves are given by y₁ = a sin ( t - kx ) and y₂ = a cos ( t - kx). The phase difference between them is
A.	/ 4
B.	/ 6
C.	/ 8
D.	/ 2
Answer» E.