Use an Identity to Write the Expression as a Single $$2 \cos ^ { 2 } 75 ^ { \circ } - 1$$

question 292

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $$2 \cos ^ { 2 } 75 ^ { \circ } - 1$$

• A) \(- \frac { 1 } { 2 }\)
• B) \(\frac { 1 } { 2 }\)
• C) \(\frac { \sqrt { 3 } } { 2 }\)
• D) \(- \frac { \sqrt { 3 } } { 2 }\)

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Definitions:

Carbohydrates

Organic compounds made up of carbon, hydrogen, and oxygen that are a major source of energy for the body, found in foods like grains, fruits, and vegetables.

Energy Calories

A unit of measure that indicates the amount of energy that food provides to the body.

Exocrine Gland

A type of gland that releases its secretions through ducts to an external or internal surface, such as sweat, salivary, and digestive glands.

Ducts

Channels or tubes in the body through which fluids or other substances are transported or secreted.