Use a Sum or Difference Identity to Find the Exact $$\frac { \tan \frac { \pi } { 15 } + \tan \frac { 4 \pi } { 15 } } { 1 - \tan \frac { \pi } { 15 } \tan \frac { 4 \pi } { 15 } }$$

Multiple Choice

Use a sum or difference identity to find the exact value.
- $$\frac { \tan \frac { \pi } { 15 } + \tan \frac { 4 \pi } { 15 } } { 1 - \tan \frac { \pi } { 15 } \tan \frac { 4 \pi } { 15 } }$$

A) $\frac { \sqrt { 3 } } { 3 }$
B) $\sqrt { 3 }$
C) $\frac { 1 } { 2 }$
D) $\frac { \sqrt { 3 } } { 2 }$