Find the Exact Value by Using a Half-Angle Identity $\sin 22.5 ^ { \circ }$

question 47

Multiple Choice

Find the exact value by using a half-angle identity.
- $\sin 22.5 ^ { \circ }$

• A) \(- \frac { 1 } { 2 } \sqrt { 2 - \sqrt { 2 } }\)
• B) \(\frac { 1 } { 2 } \sqrt { 2 + \sqrt { 2 } }\)
• C) \(\frac { 1 } { 2 } \sqrt { 2 - \sqrt { 2 } }\)
• D) \(- \frac { 1 } { 2 } \sqrt { 2 + \sqrt { 2 } }\)

---

Definitions:

Creditor Relationship

The financial and business dynamics between a creditor, who extends credit, and a debtor, who owes the creditor money.

Owner Relationship

The legal and managerial relationship between the owner(s) of a business and the business entity itself.

Automotive Parts

Components and replacements parts specifically designed for use in motor vehicles, including both original equipment (OEM) and aftermarket parts.

Journal Entries

Entries made in the bookkeeping system of a business to record financial transactions, including details of debits and credits involved.