Using a sum or difference identity, write the following as an expression involving functions of x.
-$\tan \left( x + \frac { \pi } { 6 } \right)$
A) $\frac { \tan x - \sqrt { 3 } } { 1 + \sqrt { 3 } \tan x }$
B) $\frac { 1 + \sqrt { 3 } \tan x } { \sqrt { 3 } - \tan x }$
C) $- \tan x$
D) $\tan x$

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The Answer of Using a sum or difference identity, write the following as an expression involving functions of x.
-$\tan \left( x + \frac { \pi } { 6 } \right)$
A) $\frac { \tan x - \sqrt { 3 } } { 1 + \sqrt { 3 } \tan x }$
B) $\frac { 1 + \sqrt { 3 } \tan x } { \sqrt { 3 } - \tan x }$
C) $- \tan x$
D) $\tan x$

Using a Sum or Difference Identity, Write the Following as an Expression