Express the Sum or Difference as a Product of Sines $$\cos \frac { 5 \theta } { 2 } + \cos \frac { 3 \theta } { 2 }$$

question 161

Multiple Choice

Express the sum or difference as a product of sines and/or cosines.
- $$\cos \frac { 5 \theta } { 2 } + \cos \frac { 3 \theta } { 2 }$$

• A) \(2 \sin ( 2 \theta ) \sin \theta\)
• B) \(2 \cos ( 2 \theta ) \cos \frac { \theta } { 2 }\)
• C) \(2 \sin ( 2 \theta ) \sin \frac { \theta } { 2 }\)
• D) \(2 \cos ( 2 \theta )\)

---

Definitions:

Dream Theory

A conceptual framework that seeks to understand the meaning, origins, and functions of dreams.

Drug Intoxication

The physical and mental state caused by the consumption of substances at levels that impair functioning.

Limbic System

A complex system of nerves and networks in the brain, involved in the control of basic emotions and drives.

Unfulfilled Wishes

Unfulfilled wishes are desires or aspirations that have not been realized or achieved.