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Sound waves are defined in terms of pressure variation using a cos function. But while explaining beats and standing longitudinal waves in HCV, they have described the pressure variation with the help of a sine function, and have done further calculations using that. Why is that so?? Isn’t displacement defined by sine function and pressure variation by cos??

Sound waves are defined in terms of pressure variation using a cos function. But while explaining beats and standing longitudinal waves in HCV, they have described the pressure variation with the help of a sine function, and have done further calculations using that. Why is that so?? Isn’t displacement defined by sine function and pressure variation by cos??

Grade:11

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