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Find the Exact Value of the Given Expression sin105cos345sin345cos105\sin 105 ^ { \circ } \cos 345 ^ { \circ } - \sin 345 ^ { \circ } \cos 105 ^ { \circ }

Question 53

Multiple Choice

Find the exact value of the given expression. sin105cos345sin345cos105\sin 105 ^ { \circ } \cos 345 ^ { \circ } - \sin 345 ^ { \circ } \cos 105 ^ { \circ }


A) 12\frac { 1 } { 2 }
B) (3+1) (22) 8\frac { ( - \sqrt { 3 } + 1 ) ( 2 \sqrt { 2 } ) } { 8 }
C) (31) (22) 8\frac { ( - \sqrt { 3 } - 1 ) ( 2 \sqrt { 2 } ) } { 8 }
D) 22\frac { \sqrt { 2 } } { 2 }
E) 32\frac { \sqrt { 3 } } { 2 }

Correct Answer:

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