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I came across this question on waves which tells you how to calculate the phase difference and the lag time but I don' uderstand why it is 60 degrees.Although I'm notable to draw th diagram,I will write down the explination

What is the phase relationship b/w the two signals?(y1 and y2)

The difference between the squares of the signals on the graphs is 4 and one wavelenght of y2 is 20 squares.

So it says that the lag is 1/5 of a cycle of 360 degrees which is 60 degrees.

I understand where the 1/5th came from but how is it 60 and not 72 which is what you get after you divide 5 by 360? I thought the answer was wrong but similar questions have answers mismatched with mine as well.

So please help! I've got my exam tomorrow!

Thanks

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# Homework Help: Phase difference and lag time

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