Verify That the Equation Is an Identity $$\sin ( x + y ) - \sin ( x - y ) = 2 \cos x \sin y$$

question 292

Essay

Verify that the equation is an identity.
- $$\sin ( x + y ) - \sin ( x - y ) = 2 \cos x \sin y$$

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Definitions:

Cost of Goods Sold

The specific costs incurred in creating products that are sold by a business.

Manufacturing Overhead

All manufacturing costs other than direct materials and direct labor, including expenses like rent, utilities, and equipment depreciation.

Raw Materials

The basic materials from which products are manufactured or made, typically unprocessed or only minimally processed.

Purchase of Raw Materials

The cost incurred by a company to acquire the basic materials necessary for production.