Find the Exact Value by Using a Half-Angle Identity $$\sin \frac { \pi } { 11 } + \sin \frac { \pi } { 4 }$$

Multiple Choice

Find the exact value by using a half-angle identity.
- $$\sin \frac { \pi } { 11 } + \sin \frac { \pi } { 4 }$$

A) $2 \cos \frac { 15 \pi } { 88 } \cos \frac { 7 \pi } { 88 }$
B) $2 \cos \frac { 15 \pi } { 88 } \sin \frac { 7 \pi } { 88 }$
C) $2 \sin \frac { 15 \pi } { 88 } \sin \frac { 7 \pi } { 88 }$
D) $2 \sin \frac { 15 \pi } { 88 } \cos \frac { 7 \pi } { 88 }$