Use Addition or Subtraction Formulas to Find the Exact Value $\cos \left( 255 ^ { \circ } \right)$

question 115

Essay

Use addition or subtraction formulas to find the exact value of $\cos \left( 255 ^ { \circ } \right)$ .

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Definitions:

Discontinued Operations

Components of a business, such as a department or segment, that have been disposed of or sold.

Net Income

The total earnings of a company after subtracting all expenses, taxes, and costs, indicating the company's overall profitability.

Discontinued Operations

Components of a business that have been sold or abandoned and are reported separately in the financial statements to give a clearer picture of ongoing operations.

Component

A distinct and often smaller part of a larger system, that contributes to the overall functionality or structure of that system.