Use the Product-To-Sum Formulas to Write the Expression Below as a Sum

question 66

Multiple Choice

Use the product-to-sum formulas to write the expression below as a sum or difference.
$\sin ( 8 \theta ) \cos ( 6 \theta )$

• A) \(\frac { 1 } { 2 } ( \cos ( 2 \theta ) + \cos ( 14 \theta ) )\)
• B) \(\frac { 1 } { 2 } ( \sin ( 2 \theta ) + \cos ( 14 \theta ) )\)
• C) \(\frac { 1 } { 2 } ( \sin ( 14 \theta ) + \sin ( 2 \theta ) )\)
• D) \(\frac { 1 } { 2 } ( \cos ( 2 \theta ) - \cos ( 14 \theta ) )\)
• E) \(\frac { 1 } { 2 } ( \sin ( 14 \theta ) - \sin ( 2 \theta ) )\)

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Definitions:

Factory Overhead

The indirect costs associated with manufacturing, which include expenses such as utilities, maintenance, and depreciation of equipment.

Depreciation

The process of allocating the cost of a tangible asset over its useful life.

Payback Period

The length of time it takes for an investment to generate enough cash flow to recover its initial outlay.

Payback Period

The amount of time it takes for an investment to generate enough cash flows to recover its initial cost.