Use the Fact That the Trigonometric Functions Are Periodic to Find

question 238

Multiple Choice

Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.
- $\sec \frac { 19 \pi } { 4 }$

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

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Definitions:

Muscle Fibers

Cells within muscles that contract to produce movement; made up of proteins actin and myosin.

Aerobic Respiration

A process of producing cellular energy involving oxygen.

ATP

Adenosine triphosphate, a molecule that carries energy within cells, crucial for cellular processes and metabolism.

Glucose

Glucose is a simple sugar and a primary source of energy for the cells of the body, derived from food and used immediately or stored for future use.