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

question 185

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) \(- 2\)

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