Use an Identity to Write the Expression as a Single $\sin 22.5 ^ { \circ }$

question 4

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $\sin 22.5 ^ { \circ }$

• 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) \(\frac { 1 } { 2 } \sqrt { 2 + \sqrt { 2 } }\)

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Definitions:

Environmental Costs

The negative impacts on the environment resulting from human activities, including pollution, resource depletion, and habitat destruction.

Market Costs

Expenses associated with buying, selling, and producing goods or services within a market economy.

Pollutants

Substances that contaminate the natural environment, causing harmful effects on living organisms and ecosystems.

East Coasts

The term "East Coasts" typically refers to the eastern seaboard of a continent, often associated with the Atlantic Coast in the context of the United States, marked by significant historical, cultural, and economic developments.