Express the Sum or Difference as a Product of Sines $\cos ( 6 \theta ) + \cos ( 4 \theta )$

question 136

Multiple Choice

Express the sum or difference as a product of sines and/or cosines.
- $\cos ( 6 \theta ) + \cos ( 4 \theta )$

• A) \(2 \cos ( 5 \theta ) \sin \theta\)
• B) \(2 \cos ( 5 \theta ) \cos \theta\)
• C) \(2 \cos ( 5 \theta )\)
• D) \(2 \sin ( 5 \theta ) \sin \theta\)

---

Definitions:

Self-care

The practice of taking action to preserve or improve one's own health.

Comfort Measures

Interventions designed to provide physical and emotional relief to individuals suffering from illness, pain, or discomfort.

Osteoporosis

Disorder characterized by abnormal rarefaction of bone, occurring most frequently in postmenopausal women, sedentary or immobilized individuals, and patients on long-term steroid therapy.

Lactose Intolerance

An inability to digest lactose, a sugar found in milk and dairy products, resulting in digestive discomfort.