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| \frac{E_{t 0}^{∥}}{E_{t 0}^{⊥}} | = | \frac{1}{\cos (α - γ)} | \geq 1

${\bigg|\frac{E_{t0}^\parallel}{E_{t0}^\perp}\bigg|=\bigg|\frac{1}{\cos(\alpha - \gamma)} \bigg| ≥ 1}$

Error