$\tan 5\theta =$

$\frac{5\tan \theta -10{\tan }^3\theta +{\tan }^5\theta }{1-10{\tan }^2\theta +5{\tan }^4\theta }$

$\frac{\tan \theta -10{\tan }^3\theta +5{\tan }^5\theta }{1-10{\tan }^2\theta +5{\tan }^4\theta }$

$\frac{5\tan \theta -10{\tan }^3\theta +{\tan }^5\theta }{1-5{\tan }^2\theta +10{\tan }^4\theta }$

$\frac{\tan \theta -10{\tan }^3\theta +5{\tan }^5\theta }{1-5{\tan }^2\theta +10{\tan }^4\theta }$