I’m studying for my finals and i feel stupid because of that shit please help
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Given two waves of equal frequency, if their peaks and valleys align with each other, then the waves are in phase, otherwise the waves are out of phase.
Phase difference simply means the magnitude of the distance between corresponding peaks or valleys.
Since waves are cyclical, they can be expressed in terms of their relationship with a [unit circle](https://www.mathsisfun.com/algebra/trig-interactive-unit-circle.html). Therefore, phase difference can be expressed as an angle. Where two waves are in phase, their phase difference is zero degrees. If waves are fully out of phase (meaning one wave’s peak coincides with the other wave’s valley) then they are 180 degrees out of phase.
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