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) \(- 2\)

---

Definitions:

Enjoy Doing

The feeling of pleasure or satisfaction experienced when engaging in an activity one likes or finds rewarding.

Make Living

involves earning enough income through work or business to cover personal and family expenses.

Psychology

The scientific study of the human mind and its functions, especially those affecting behavior in a given context.

Focuses

Refers to the central points of interest or activity, or the act of directing attention and resources towards specific goals.