Write the Sum as a Product $\cos 4 x + \cos 5 x$

question 35

Short Answer

Write the sum as a product. $\cos 4 x + \cos 5 x$

---

Definitions:

Annual Fixed Costs

The total of all business expenses that are consistent and unchanged throughout the fiscal year, regardless of production levels or sales volume.

Contribution Margin

The contribution margin represents the portion of sales revenue that is not consumed by variable costs and contributes to covering the company's fixed costs.

Depreciation Expense

A technique in accounting for distributing the expense of a physical asset across its usable life.

Fixed Costs

Expenses that do not change with the level of activity or output over a short period, such as rent, salaries, and insurance premiums.