Use the Fundamental Identities to Simplify the Expression $\sin 260 ^ { \circ } \cos 20 ^ { \circ } - \cos 260 ^ { \circ } \sin 20 ^ { \circ }$

question 260

Multiple Choice

Use the fundamental identities to simplify the expression.
- $\sin 260 ^ { \circ } \cos 20 ^ { \circ } - \cos 260 ^ { \circ } \sin 20 ^ { \circ }$

• A) \(- \frac { 13 } { 3 }\)
• B) \(- \frac { \sqrt { 3 } } { 2 }\)
• C) \(\frac { \sqrt { 3 } } { 2 }\)
• D) \(- \frac { 1 } { 2 }\)

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