Write the Product as a Sum or Difference of Trigonometric $\sin 15 ^ { \circ } \cos 105 ^ { \circ } + \cos 15 ^ { \circ } \sin 105 ^ { \circ }$

question 209

Multiple Choice

Write the product as a sum or difference of trigonometric functions.
- $\sin 15 ^ { \circ } \cos 105 ^ { \circ } + \cos 15 ^ { \circ } \sin 105 ^ { \circ }$

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

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