Find the ratio of permeability of the two media when the wave is incident on the boundary at 45 degree and reflected by the boundary at 60 degree?

1:‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇ3

‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇ31

1‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇ2

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