Question

Write the expression as the sine, cosine, or tangent of an angle:
tan2x+tanx/1-tan2xtanx

Answer 1

@Jhannybean

Answer 2

\[\tan2x+\tan x\over 1-\tan2x\tan x\]\[{{2\tan x\over{1-\tan^2 x}}+\tan x}\over{1-{2\tan x\over{1-\tan^2 x}}\tan x}\]