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Prove that 12tan(x2)+14tan(x4)+...+12ntan(x2n)=12ncot+(x2n)−cot x for all nϵN and 0<x<x2.

Answer»

Prove that 12tan(x2)+14tan(x4)+...+12ntan(x2n)=12ncot+(x2n)cot x for all nϵN and 0<x<x2.




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