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tan-2-pi-7-tan-2-2pi-7-tan-2-3pi-7-




Question Number 92054 by john santu last updated on 04/May/20
tan^2 ((π/7))+tan^2 (((2π)/7))+tan^2 (((3π)/7)) ?
tan2(π7)+tan2(2π7)+tan2(3π7)?

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