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Find the Exact Value of the Expression sin⁡255∘cos⁡15∘−cos⁡255∘sin⁡15∘\sin 255 ^ { \circ } \cos 15 ^ { \circ } - \cos 255 ^ { \circ } \sin 15 ^ { \circ }

Question 108

Multiple Choice

Find the exact value of the expression.
- sin⁡255∘cos⁡15∘−cos⁡255∘sin⁡15∘\sin 255 ^ { \circ } \cos 15 ^ { \circ } - \cos 255 ^ { \circ } \sin 15 ^ { \circ }


A) −32- \frac { \sqrt { 3 } } { 2 }

B) −174- \frac { 17 } { 4 }

C) −12- \frac { 1 } { 2 }

D) 32\frac { \sqrt { 3 } } { 2 }

Correct Answer:

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