Find the Exact Value of the Expression $$\tan ^ { - 1 } \left[ \tan \left( - \frac { \pi } { 8 } \right) \right]$$

question 156

Multiple Choice

Find the exact value of the expression. Do not use a calculator.
- $$\tan ^ { - 1 } \left[ \tan \left( - \frac { \pi } { 8 } \right) \right]$$

• A) \(- 8 \pi\)
• B) \(\frac { \pi } { 8 }\)
• C) \(8 \pi\)
• D) \(- \frac { \pi } { 8 }\)

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Definitions:

Perpetual Inventory System

An accounting system that continuously updates inventory records and cost of goods sold after each purchase or sale.

Closing Entry

Journal entries made at the end of an accounting period to transfer the balances of temporary accounts to permanent ones, thereby preparing the books for the next period.

Selected Accounts

Accounts chosen for review or analysis, often for the purpose of financial reporting or auditing.

Normal Credit Balance

The expected positive balance of certain types of accounts in the double-entry bookkeeping system, such as liabilities, revenues, and equity accounts.