Use Sum and Difference Formulas for Cosines and Sines
- $\sin 255 ^ { \circ }$

question 70

Multiple Choice

Use Sum and Difference Formulas for Cosines and Sines
- $\sin 255 ^ { \circ }$

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

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