Use the Formula for the Cosine of the Difference of Two

question 7

Multiple Choice

Use the Formula for the Cosine of the Difference of Two Angles
- $\cos \left( 155 ^ { \circ } \right) \cos \left( 35 ^ { \circ } \right) + \sin \left( 155 ^ { \circ } \right) \sin \left( 35 ^ { \circ } \right)$

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

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Definitions:

Cognitive Dissonance Theory

The psychological conflict resulting from incongruous beliefs and attitudes held simultaneously, leading to a state of mental discomfort that individuals strive to reduce.

Self-Serving Bias

A common tendency for people to attribute positive outcomes to their own character but attribute negative outcomes to external factors.

Fundamental Attribution Error

The tendency to overemphasize personality traits and underestimate situational influences when explaining others' behavior.

Self-Perception Theory

The hypothesis that individuals determine their attitudes and preferences by interpreting the meaning of their own behavior.