Rewrite the Following as a Product of Trigonometric Functions $\cos ( - x ) \cos x - \sin ( - x ) \sin x$

question 304

Multiple Choice

Rewrite the following as a product of trigonometric functions.
- $\cos ( - x ) \cos x - \sin ( - x ) \sin x$

• A) 1
• B) 2
• C) \(\cos ^ { 2 } x \sin ^ { 2 } x\)
• D) 0

---

Definitions:

Fundamental Value Differences

Core disagreements between individuals or groups regarding what is important in life.

Aggressive Member

An individual in a group or team who exhibits forceful or assertive behavior, often pushing strongly for their own ideas or preferences.

Causative Agent

A factor, such as a microorganism or chemical substance, that is responsible for causing a disease or condition.

Disease X

A placeholder name used by the World Health Organization (WHO) to describe a hypothetical, unknown pathogen that could cause a future epidemic.