Use a Sum or Difference Identity to Find the Exact $$\frac { \tan 165 ^ { \circ } - \tan 45 ^ { \circ } } { 1 + \tan 165 ^ { \circ } \tan 45 ^ { \circ } }$$

question 165

Multiple Choice

Use a sum or difference identity to find the exact value.
- $$\frac { \tan 165 ^ { \circ } - \tan 45 ^ { \circ } } { 1 + \tan 165 ^ { \circ } \tan 45 ^ { \circ } }$$

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

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