Prove that: `t a nalpha+2tan2alpha+4tan4alpha+8cot8alpha=cotalpha`

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Prove that: tan alpha+2tan2 alpha+4tan4 alpha+8cot8 alpha=cot alpha

tanalpha+2tan2alpha+4tan4alpha+8cot8alpha=?

tan alpha+2tan2 alpha+4tan4 alpha+8cot8 alpha=cot alpha

Prove that tan alpha + 2tan 2alpha + 4tan 4alpha + 8cot 8alpha = cot alpha .

Prove that cotA-tanA=2cot2A and deduce that tan alpha+2tan2alpha+4tan4alpha+8cot8alpha=cot alpha

prove that :tan(alpha)+2tan(2 alpha)+4(tan4 alpha)+8cot(8 alpha)=cot(alpha)

tan alpha+2tan2alpha+4tan4alpha+8cot8alpha is equal to

tan alpha+2tan2 alpha+4tan4 alpha+8cot8 alpha is equal to :

If alpha = (2pi)/7 prove that tan alpha *tan 2alpha + tan 2alpha* tan 4alpha + tan 4alpha* tan a = - 7