Find the Exact Value by Using a Half-Angle Identity $\tan 165 ^ { \circ }$

question 239

Multiple Choice

Find the exact value by using a half-angle identity.
- $\tan 165 ^ { \circ }$

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

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Definitions:

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