Multiple Choice
Use a sum-to-product identity to rewrite the expression.
-cos 22° - cos 50°
A) 2 sin 36° sin 14°
B) -2 sin 36° sin 14°
C) -2 cos 36° cos 14°
D) 2 sin 36° cos 14°
Correct Answer:
Verified
Correct Answer:
Verified
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