Use the Formula for the Cosine of the Difference of Two

question 111

Multiple Choice

Use the Formula for the Cosine of the Difference of Two Angles
- $\cos \left( \frac { 5 \pi } { 12 } \right) \cos \left( \frac { \pi } { 4 } \right) + \sin \left( \frac { 5 \pi } { 12 } \right) \sin \left( \frac { \pi } { 4 } \right)$

• A) \(\cos \left( \frac { \pi } { 6 } \right)\)
• B) \(\cos \left( \frac { \pi } { 3 } \right)\)
• C) \(\cos \left( \frac { 2 \pi } { 3 } \right)\)
• D) \(\cos \left( \frac { 5 \pi } { 6 } \right)\) Find the exact value of the expression.

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Definitions:

Journalize

The process of recording transactions in a company's journal, marking the first step in the accounting cycle.

Transactions

Economic events that involve transferring resources between entities, affecting financial statements.

Equipment

Assets used in the production or supply of services, often subject to depreciation over their useful lives.

Owner's Capital

The amount of money and other forms of assets invested into a business by the owner(s), minus any withdrawals, representing the owner’s equity.