Use a Sum or Difference Identity to Find the Exact $\sin 185 ^ { \circ } \cos 65 ^ { \circ } - \cos 185 ^ { \circ } \sin 65 ^ { \circ }$

question 267

Multiple Choice

Use a sum or difference identity to find the exact value.
- $\sin 185 ^ { \circ } \cos 65 ^ { \circ } - \cos 185 ^ { \circ } \sin 65 ^ { \circ }$

• A) \(\frac { \sqrt { 3 } } { 2 }\)
• B) \(\frac { 37 } { 12 }\)
• C) \(- \frac { \sqrt { 3 } } { 2 }\)
• D) \(- \frac { 1 } { 2 }\)

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