Find the Exact Value of the Expression If θ = $$f ( \theta ) = \cos \theta \quad \text { Find } f ( \theta ) \text {. }$$

question 161

Multiple Choice

Find the exact value of the expression if θ = 45°. Do not use a calculator.
- $$f ( \theta ) = \cos \theta \quad \text { Find } f ( \theta ) \text {. }$$

• A) \(\frac { \sqrt { 3 } } { 3 }\)
• B) \(\sqrt { 2 }\)
• C) \(\frac { \sqrt { 2 } } { 2 }\)
• D) \(- \frac { \sqrt { 2 } } { 2 }\)

---

Definitions:

Exchange Rate Appreciation

Exchange rate appreciation refers to the increase in value of one currency relative to another, meaning you need fewer units of the appreciating currency to buy one unit of another currency.

Domestic Deflation

A decline in the general price level of goods and services within a domestic economy over a period of time.

Exports and Imports

Describes goods and services sold to other countries (exports) and goods and services purchased from other countries (imports).

Flexible Exchange Market

A foreign exchange system where the value of currencies are determined by market forces without direct government intervention.