Use a Sum or Difference Identity to Find the Exact $\tan \left( - 15 ^ { \circ } \right)$

question 4

Multiple Choice

Use a sum or difference identity to find the exact value.
- $\tan \left( - 15 ^ { \circ } \right)$

• A) \(- \sqrt { 3 } + 2\)
• B) \(\frac { \sqrt { 3 } + 4 } { 2 }\)
• C) \(\frac { \sqrt { 3 } - 4 } { 2 }\)
• D) \(\sqrt { 3 } - 2\)

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