Use the Sum-To-Product Formulas to Find the Exact Value of the Given

question 24

Multiple Choice

Use the sum-to-product formulas to find the exact value of the given expression.
$\cos 150 ^ { \circ } + \cos 30 ^ { \circ }$

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Definitions:

Market Rate

The current price or cost of a good, service, or financial asset in the marketplace, determined by supply and demand dynamics.

Par Value

The nominal dollar amount assigned to a security by the issuer.

Semiannual Interest

Interest that is calculated and paid twice a year, often associated with bonds or loans.

Selling Price

The amount of money charged for a product or service, determined by various factors including cost, demand, and market conditions.