Use Identities to Find the Exact Value $\cos 255 ^ { \circ }$

question 101

Multiple Choice

Use Identities to find the exact value.
- $\cos 255 ^ { \circ }$

• A) \(\sqrt { 2 } - \sqrt { 6 }\)
• B) \(\frac { \sqrt { 2 } - \sqrt { 6 } } { 4 }\)
• C) \(\sqrt { 6 } - \sqrt { 2 }\)
• D) \(\frac { \sqrt { 6 } - \sqrt { 2 } } { 4 }\)

---

Definitions:

Direct Manufacturing Cost

The sum of all costs directly tied to the production process, including direct labor and raw materials.

Manufacturing Overhead

Costs incurred in the production process that are not directly associated with individual units, including indirect materials, labor, and utilities, vital for operational continuity.

Gross Margin

A company's revenue minus its cost of goods sold, indicating how efficiently a company uses labor and supplies in production.

Differential Costs

The change in total costs that results from choosing one alternative over another in decision-making processes.