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How does cos (phi1-phi2 +kx)=cos(kx) Isit just algebra?

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- #1

- 41

- 1

How does cos (phi1-phi2 +kx)=cos(kx) Isit just algebra?

- #2

blue_leaf77

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blue_leaf77

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Is ##\phi = \omega t ##?

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$$\phi=A_0 \cos(\omega t-k x+\phi_1)+A_1 \cos(\omega t-k x+\phi_2)?$$

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