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α\alphaα = tan2π7⋅tan4π7+tan4π7⋅tan8π7+tan8π7⋅tan2π7\tan { \frac { 2\pi }{ 7 } } \cdot \tan { \frac { 4\pi }{ 7 } } +\tan { \frac { 4\pi }{ 7 } } \cdot \tan { \frac { 8\pi }{ 7 } } +\tan { \frac { 8\pi }{ 7 } } \cdot \tan { \frac { 2\pi }{ 7 } } tan72π⋅tan74π+tan74π⋅tan78π+tan78π⋅tan72π
Find the absolute value ∣α∣\left| \alpha \right| ∣α∣.
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