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

Question 70

Multiple Choice

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


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

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