Evaluate the Expression Using the Concept of a Reference Angle $\cos \left( - 675 ^ { \circ } \right)$

question 4

Multiple Choice

Evaluate the expression using the concept of a reference angle. $\cos \left( - 675 ^ { \circ } \right)$

• A) \(- \frac { \sqrt { 2 } } { 2 }\)
• B) \(\frac { \sqrt { 2 } } { 2 }\)
• C) \(\frac { \sqrt { 2 } } { 6 }\)
• D) \(- \frac { \sqrt { 6 } } { 2 }\)
• E) \(\frac { \sqrt { 6 } } { 6 }\)

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Definitions:

Profit Equation

A calculation that subtracts total expenses from total revenue, determining the financial gain of a business operation.

Total Revenue

The total income generated from the sale of goods or services by a business before any expenses are subtracted.

Total Cost

The entire amount of money spent on the production, operation, or acquisition of goods and services, including all variable and fixed expenses.

Price-Setting Process

The method by which businesses determine the selling price of their products or services, considering costs, market demand, and competition.