Prove that
`tan alpha+2tan 2 alpha+4 tan 4 alpha+ 8 cos 8 alpha=cot alpha`

tan alpha + 2 tan 2alpha + 4 tan 4 alpha + 8 cot 8 alpha =

prove that : tan(alpha)+2 tan(2alpha) +4(tan4alpha)+8cot(8alpha) = cot(alpha)

Prove that cot alpha - tan alpha =2 cot 2 alpha.

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

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

Statement I tan alpha+2tan 2 alpha+4 tan 4 alpha + 8 tan 8 alpha+16 cot 16 alpha=cot alpha Statement II cot alpha- tan alpha=2 cot 2 alpha

Prove: (2)/( cot alpha tan 2 alpha ) = 1 - tan ^(2) alpha.

write tan 8 alpha in temrs of tan 4 alpha .

Prove that: tan^2theta=tan^2alpha ,theta=npi+-alpha,n in Z

If n=pi/(4alpha), then tan alpha tan 2alpha tan 3 alpha ... tan(2n-1)alpha is equal to (a) 1 (b) 1/2 (c) 2 (d) 1/3