Use the Graph to Complete the Identity $\cos 2 x \cos 5 x + \sin 2 x \sin 5 x = ?$

question 196

Multiple Choice

Use the graph to complete the identity.
- $\cos 2 x \cos 5 x + \sin 2 x \sin 5 x = ?$

• A) \(y = \cos 3 x\)
• B) \(y = \sin 3 x\)
• C) \(y = \cos 7 x\)
• D) \(y = \sin 7 x\)

---

Definitions:

Nonrandomly

A selection or occurrence method that is not based on chance, often implying bias or a predetermined pattern.

Émile Durkheim

A founding figure in sociology, known for his work on social integration, religion, and theories on the collective conscience and anomie.

Anomic

Relating to anomie, a state or condition of individuals or society characterized by a breakdown or absence of social norms and values.

Company Cutbacks

A reduction in company expenses often achieved through layoffs, reduction in operational costs, or scaling back production to manage financial health.