Find the Exact Value of the Expression $\sin 195 ^ { \circ } \cos 75 ^ { \circ } - \cos 195 ^ { \circ } \sin 75 ^ { \circ }$

question 236

Multiple Choice

Find the exact value of the expression.
- $\sin 195 ^ { \circ } \cos 75 ^ { \circ } - \cos 195 ^ { \circ } \sin 75 ^ { \circ }$

• A) \(\frac { \sqrt { 3 } } { 2 }\)
• B) \(- \frac { \sqrt { 3 } } { 2 }\)
• C) \(- \frac { 13 } { 4 }\)
• D) \(- \frac { 1 } { 2 }\)

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