Choose the One Alternative That Best Completes the Statement or Answers

question 246

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Express the product as a sum containing only sines or cosines.
- $\cos ( 2 \theta ) \cos ( 4 \theta )$

• A) \(\frac { 1 } { 2 } [ \cos ( 2 \theta ) + \cos ( 6 \theta ) ]\)
• B) \(\cos ^ { 2 } \left( 6 \theta ^ { 2 } \right)\)
• C) \(\frac { 1 } { 2 } [ \cos ( 6 \theta ) - \cos ( 2 \theta ) ]\)
• D) \(\frac { 1 } { 2 } [ \cos ( 6 \theta ) - \sin ( 2 \theta ) ]\)

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Definitions:

Margin of Safety

The difference between actual or anticipated sales and the break-even point.

Unit Selling Price

The pricing of individual units of goods or services that a business offers for sale.

Break-even Point

The financial state where total costs equal total revenues, implying that the business is neither making a profit nor a loss.

Operating Income

The profit earned from a company's core business operations, excluding deductions of interest and tax.