Question

simplify Tan2w-tan4w/(1+tan2wtan4w)

Answer 1

Have you seen this rule before
\[\large \rm tan( u \pm v ) = \frac{\tan u \pm \tan v }{1 \mp \tan u \tan v } \]

Answer 2

Plug in u = 2w and v = 4w

Answer 3

thank you!