Use a Calculator to Find the Approximate Value of the Expression

question 278

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

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Definitions:

Observational Study

A research method in which the investigator passively observes and records phenomena without altering the environment or conditions.

Sample Survey

A method of collecting data by selecting a subset of individuals from a population to estimate characteristics of the whole population.

Double-Blind Experiment

An experimental method in which neither the participants nor the experimenters know who is receiving a particular treatment, to prevent bias.

Double Blind

An experimental design where neither the participants nor the experimenters know who is receiving a particular treatment, preventing bias in research results.