Choose the One Alternative That Best Completes the Statement or Answers

question 210

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.
- $\sin ( 4 \theta ) \sin ( 6 \theta )$

• A) \(\sin ^ { 2 } \left( 24 \theta ^ { 2 } \right)\)
• B) \(\frac { 1 } { 2 } [ - \cos ( 2 \theta ) - \cos ( 10 \theta ) ]\)
• C) \(\frac { 1 } { 2 } [ \cos ( 2 \theta ) - \cos ( 10 \theta ) ]\)
• D) \(\frac { 1 } { 2 } [ \cos ( 10 \theta ) - \sin ( 2 \theta ) ]\)

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Definitions:

Income Effect

Variations in the income of an individual or an economy and the subsequent effects on the demand for goods or services.

Discrimination

Unfair or prejudicial treatment of different categories of people or things, especially on the grounds of race, age, or sex.

Profitable

A state or condition of yielding a financial profit or gain; it is often considered after all expenses have been deducted.

Opportunity Cost

The cost of foregone alternatives; the value of the best alternative that is not chosen.