Can't figure out this question, a little help would be great.(adsbygoogle = window.adsbygoogle || []).push({});

Solve for X, domain: 0<x<2pi

tan4X - tan2X = 0

What i got is that if we use the double angle formula to expand tan2X into

2tanx / 1-tan^2x

the u move it onto the other side and then somehow tan2x is = to tan4X, i'm very confused, please help.

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# Little Help With a Math Question

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