Use the Product-To-Sum Formulas to Rewrite the Product as a Sum

question 13

Multiple Choice

Use the product-to-sum formulas to rewrite the product as a sum or difference.​ $$\sin \frac { \pi } { 3 } \cos \frac { \pi } { 6 }$$ ​

• A)​ \(\frac { 1 } { 2 } \left( \sin \frac { \pi } { 2 } + \cos \frac { \pi } { 6 } \right)\)
• B)​ \(\frac { 1 } { 2 } \left( \sin \frac { \pi } { 2 } + \sin \frac { \pi } { 6 } \right)\)
• C)​ \(\frac { 1 } { 2 } \left( \sin \frac { \pi } { 2 } - \cos \frac { \pi } { 6 } \right)\)
• D)​ \(\frac { 1 } { 2 } \left( \sin \frac { \pi } { 2 } - \sin \frac { \pi } { 6 } \right)\)
• E)​ \(\left( \sin \frac { \pi } { 2 } + \cos \frac { \pi } { 6 } \right)\)

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Definitions:

Percentage Of Sales

A method or analysis tool that expresses components of a financial statement as a percentage of total sales.

Variable Expense

Costs that fluctuate with the level of production or business activity, such as raw material costs and shipping fees.

Break-Even

Break-even is the point at which total revenues equal total costs, resulting in no net profit or loss, indicating the volume of sales needed to cover costs.

Fixed Expense

Fixed expenses are costs that do not change with the level of production or sales volume, such as rent or salaries.