Use a Calculator to Find the Approximate Value of the Expression

question 317

Multiple Choice

Use a calculator to find the approximate value of the expression rounded to two decimal places.
- $\cos 3$

• A) -0.99
• B) 0.99
• C) -1.00
• D) 1.00

---

Definitions:

Randomization

The process of randomly assigning subjects to different groups in a study, minimizing biases and ensuring variability.

Dependent Variable

The outcome factor that researchers measure in an experiment to see if it changes in response to manipulations of the independent variable.

Braking Speed

The rate at which a vehicle can decelerate and come to a complete stop, usually measured in meters per second squared (m/s²).

Internal Validity

Relates to the extent to which a study can establish a cause-and-effect relationship between its variables, free from external influence.