Use the Formula For $\sin ( x + y )$ To Simplify the Expression

question 55

Multiple Choice

Use the formula for $\sin ( x + y )$ to simplify the expression $\sin \left( t + \frac { 17 \pi } { 2 } \right)$ .

• A) \(\cos t - 17 \pi\)
• B) \(\cos t + 17 \pi\)
• C) \(\frac { \cos t } { 17 \pi }\)
• D) \(17 \pi \cos t\)
• E) \(\cos t\)

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Definitions:

Fixed Expenses

Expenses that do not change with the level of production or sales within a certain range and period, such as rent, salaries, and insurance.

Break-Even Sales

The amount of sales revenue needed to cover all fixed and variable costs, resulting in no profit or loss.

Variable Production Costs

Costs that fluctuate directly with the level of output, including materials, labor, and other expenses that vary with production volume.

Fixed Cost

Expenses that remain constant in total regardless of changes in the level of production or sales volume, such as rent, salaries, and insurance.