Question: Beginning with Eq. (4.38), show that for two dielectric media, in general tan θ p = [ϵ t (ϵ t μ i - ϵ i
Beginning with Eq. (4.38), show that for two dielectric media, in general tan θp= [ϵt(ϵtμi- ϵiμt)>/ϵi(ϵtμt- ϵiμi)]1/2.

; -cos 0, Mi , , -cos 0; Eor Eoi/u (4.38) -cos 0; + cos 0; Mi
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