Use a Sum or Difference Identity to Find the Exact $\sin 260 ^ { \circ } \cos 20 ^ { \circ } - \cos 260 ^ { \circ } \sin 20 ^ { \circ }$

question 458

Multiple Choice

Use a sum or difference identity to find the exact value.
- $\sin 260 ^ { \circ } \cos 20 ^ { \circ } - \cos 260 ^ { \circ } \sin 20 ^ { \circ }$

• A) \(- \frac { 1 } { 2 }\)
• B) \(- \frac { 13 } { 3 }\)
• C) \(- \frac { \sqrt { 3 } } { 2 }\)
• D) \(\frac { \sqrt { 3 } } { 2 }\)

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Definitions:

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.

Temperament

Refers to the inherent part of an individual's personality and character affecting their behavior and reactions.

Biological Functions

The processes and activities carried out by living organisms to maintain life, including growth, reproduction, and response to stimuli.

Playful

Exhibiting behavior that is lighthearted, fun, and often imaginative, typically associated with children but also observed in adults.