A few question on my trig assignment... It's not going all that well.. I worked hard on the LaTex...

1. Simplify: $\displaystyle \frac{\tan(\frac{\pi}{4} - x) - \tan(\frac{\pi}{4} + x)}{\tan x}$

2. Solve for x, $\displaystyle 0 \leq x \leq 2\pi$

a) $\displaystyle \sin 2x + \cos x = 0$

b) $\displaystyle 3\tan x = \tan 2x$

THANKSIES!!