Solve the Equation for Exact Solutions $4 \cos ^ { - 1 } x = \pi$

question 113

Multiple Choice

Solve the equation for exact solutions.
- $4 \cos ^ { - 1 } x = \pi$

• A) \(\left\{ \frac { \pi } { 4 } \right\}\)
• B) \(\left\{ \frac { 1 } { 2 } \right\}\)
• C) \(\left\{ \frac { \sqrt { 3 } } { 2 } \right\}\)
• D) \(\left\{ \frac { \sqrt { 2 } } { 2 } \right\}\)

---

Definitions:

Adolescence

The developmental stage between childhood and adulthood characterized by physical, psychological, and social changes.

Early Adulthood

A life stage characterized by new challenges and responsibilities, typically ranging from ages 20 to 40.

Conscientiousness

A personality trait characterized by organization, dependability, discipline, and a strong sense of duty.

Agreeableness

A personality trait in psychology that describes a person's tendency to be compassionate, cooperative, and harmonious in their interactions with others.