Complete the Identity $\frac { \sin ( 4 \theta ) + \sin ( 8 \theta ) } { \cos ( 4 \theta ) + \cos ( 8 \theta ) } = ?$

Multiple Choice

Complete the identity.
- $\frac { \sin ( 4 \theta ) + \sin ( 8 \theta ) } { \cos ( 4 \theta ) + \cos ( 8 \theta ) } = ?$

A) $\tan ( 4 \theta ) + \tan ( 8 \theta )$
B) $\tan ( 6 \theta )$
C) $\tan ( 6 \theta ) \cot ( 2 \theta )$
D) $2 \tan ( 6 \theta ) \tan ( 2 \theta )$