Use a product-to-sum identity to rewrite the expression.
-sin 41° cos 28°
A) 0.5(cos(13°) - cos(69°))
B) 0.5(cos(69°) + cos(13°))
C) 0.5(sin(13°) - sin(69°))
D) 0.5(sin(69°) + sin(13°))

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The Answer of Use a product-to-sum identity to rewrite the expression.
-sin 41° cos 28°
A) 0.5(cos(13°) - cos(69°))
B) 0.5(cos(69°) + cos(13°))
C) 0.5(sin(13°) - sin(69°))
D) 0.5(sin(69°) + sin(13°))

Use a Product-To-Sum Identity to Rewrite the Expression