Use a Calculator to Find the Approximate Value $\cos ^ { - 1 } ( 0.68 )$

question 177

Multiple Choice

Use a calculator to find the approximate value. Express your answer in degrees rounded to two decimal places.
- $\cos ^ { - 1 } ( 0.68 )$

• A) \(47.16 ^ { \circ }\)
• B) \(34.22 ^ { \circ }\)
• C) \(42.84 ^ { \circ }\)
• D) \(85.69 ^ { \circ }\)

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Definitions:

Concrete-Operations

A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.

Preoperational Child

Refers to the stage in Piaget’s theory of cognitive development (ages 2-7) where children begin to use language and think symbolically, but their thinking is still intuitive and egocentric.

Conservation

The principle of saving natural resources to prevent depletion and harm to the environment.

Formal Operations

The final stage of cognitive development in Piaget's theory, characterized by logical, systematic thinking and abstract reasoning.