y1=4sin⁡(ωt+kx), y2=-4cos⁡(ωt+kx), the phase difference is _____ – McqOptions

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1.	y1=4sin⁡(ωt+kx), y2=-4cos⁡(ωt+kx), the phase difference is __________
A.	π/2
B.	3π/2
C.	π
D.	Zero
Answer» C.

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