Use a Calculator to Evaluate $\cos ^ { - 1 } ( - 0.81 )$

question 24

Multiple Choice

Use a calculator to evaluate $\cos ^ { - 1 } ( - 0.81 )$ .Round your answer to two decimal places.

• A)0.68
• B) \(- 0.89\)
• C)0.72
• D) \(- 0.94\)
• E)2.51

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Definitions:

Amygdala

A section of the brain involved in experiencing emotions, such as fear and pleasure.

Hippocampus

A part of the brain associated with memory formation, organization, and storage.

Basal Ganglia

A group of structures in the brain that help control movement, coordination, and learning.

Frontal Lobes

Portions of the brain located behind the forehead that are responsible for complex cognitive functions, including decision making, problem solving, and controlling behavior.