Prove that tan7- - tan5- - tan2- - tan7- -tan5- -tan 2-

tan 7α tan 5α tan2α →tan 7α tan5α tan 7α tan 5α1+tan 7αtan 5α →(tan7α tan5α)(1+tan 7αtan 5α 11+tan 7αtan 5α) →(tan7α tan5α)(tan 7αtan 5α1+ta ...

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General Solution of Trigonometric Equation

Prove that ...

Question

Prove that $tan 7 α - tan 5 α - tan 2 α = tan 7 α . tan 5 α . tan 2 α$

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