Find the Exact Value of the Expression Using the Provided $\cos 165 ^ { \circ }$

question 88

Multiple Choice

Find the exact value of the expression using the provided information.
- $\cos 165 ^ { \circ }$

• A) \(\frac { 1 } { 2 } \sqrt { 2 + \sqrt { 3 } }\)
• B) \(\frac { 1 } { 2 } \sqrt { 2 - \sqrt { 3 } }\)
• C) \(- \frac { 1 } { 2 } \sqrt { 2 - \sqrt { 3 } }\)
• D) \(- \frac { 1 } { 2 } \sqrt { 2 + \sqrt { 3 } }\)

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Definitions:

Observational Learning

A learning process where individuals acquire new behaviors or information by watching others.

Classical Conditioning

A learning process that occurs when two stimuli are repeatedly paired; a response that is at first elicited by the second stimulus is eventually elicited by the first stimulus alone.

Imprinting

The process by which some animals exhibit the fixed action pattern (FAP) of attachment in response to a releasing stimulus. The FAP occurs during a critical period and is difficult to modify.

Cognitively Accurate

Referring to thoughts or perceptions that correctly represent reality.