Use Half-Angle Formulas to Find the Exact Value for the Following

question 74

Essay

Use half-angle formulas to find the exact value for the following:
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cos 165°

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Definitions:

Foreign Corrupt Practices Act

A U.S. law that prohibits American companies and individuals from bribing foreign officials to retain or obtain business.

Countertrade

A form of international trade in which goods or services are exchanged directly for other goods or services without using a medium of exchange, such as money.

Mining Equipment

Tools, machinery, and vehicles used in the operation of extracting minerals, metals, and other valuable materials from the earth.

Direct Exporting

A method of entering a foreign market by selling products directly to customers in another country without using intermediaries.