Find the Value Of $\cos ^ { - 1 } \left( - \frac { 1 } { 2 } \right)$

question 4

Essay

Find the value of $\cos ^ { - 1 } \left( - \frac { 1 } { 2 } \right)$ if it is defined.

---

Definitions:

Skin Tone

The color and appearance of a person's skin, often determined by pigmentation, skin condition, and blood flow.

African American

A term used to describe Americans of African descent, particularly those whose ancestors were brought to America through the transatlantic slave trade.

Natural Sunlight

The light provided by the sun, which includes a range of electromagnetic radiation essential for Vitamin D synthesis in humans.

Suspicious Bruises

Bruises that may indicate abuse or non-accidental injury, often assessed by medical professionals for patterns or locations inconsistent with typical injuries.