Find the Exact Value of the Given Expression $\cos \left( 120 ^ { \circ } + 315 ^ { \circ } \right)$

question 259

Multiple Choice

Find the exact value of the given expression. $\cos \left( 120 ^ { \circ } + 315 ^ { \circ } \right)$

• A) \(\frac { ( 1 - \sqrt { 3 } ) ( 2 \sqrt { 2 } ) } { 8 }\)
• B) \(\frac { ( - 1 + \sqrt { 3 } ) ( 2 \sqrt { 2 } ) } { 8 }\)
• C) \(\frac { ( 1 + \sqrt { 3 } ) ( 2 \sqrt { 2 } ) } { 8 }\)
• D) \(\frac { ( - 1 - \sqrt { 3 } ) ( 2 \sqrt { 2 } ) } { 8 }\)

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Definitions:

Cultural Stereotypes

Oversimplified and generalized views held about a particular group of people or culture, often without personal experience or knowledge.

Gender Identity

Knowledge that one is female or male. Also, the name of the first stage in Kohlberg’s cognitive-developmental theory of the assumption of gender roles.

Egalitarian

A principle that emphasizes equality and equal rights among all people, advocating for the removal of inequalities among people.

Gender-schema Theory

A theory that suggests that individuals learn about gender roles and cultural expectations through the categorization of their experiences according to gender.