Question: convert the following products into a sum or difference (2) -3sin35-3sin15 = 3. Evaluate the following expression. 4cos40cos50-4sin27.5sin 17.5

convert the following products into a sum or difference(2) -3sin35-3sin15 = 3. Evaluate the following expression. 4cos40cos50-4sin27.5sin 17.5
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(2) -3sin35-3sin15 = 3. Evaluate the following expression. 4cos40cos50-4sin27.5sin 17.5

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