Use the Cofunction Identities to Find an Angle That Makes $$\frac { \tan 80 ^ { \circ } + \tan 70 ^ { \circ } } { 1 - \tan 80 ^ { \circ } \tan 70 ^ { \circ } }$$

Multiple Choice

Use the cofunction identities to find an angle that makes the statement true.
- $$\frac { \tan 80 ^ { \circ } + \tan 70 ^ { \circ } } { 1 - \tan 80 ^ { \circ } \tan 70 ^ { \circ } }$$

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