Find the Exact Value of the Expression A) $\frac { 1 } { 2 }$

question 180

Multiple Choice

Find the exact value of the expression.
- $\cos \left( \frac { 7 \pi } { 12 } \right) \cos \left( \frac { 5 \pi } { 12 } \right) + \sin \left( \frac { 7 \pi } { 12 } \right) \sin \left( \frac { 5 \pi } { 12 } \right)$

• A) \(\frac { 1 } { 2 }\)
• B) \(\frac { 1 } { 4 }\)
• C) 1
• D) \(\frac { \sqrt { 3 } } { 2 }\)

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Definitions:

Boolean Operator

Logical terms (such as AND, OR, NOT) used in search engines and databases to refine and specify search queries.

Narrow A Search

The process of refining search criteria to reduce the number of results and more precisely locate specific information.

Citations

References or quotations from or to books, papers, or authors, especially in academic work.

Boolean Operator

Boolean operators are logical terms used in search engines and databases (such as AND, OR, and NOT) to refine and manipulate search results based on specific criteria.