Use a Calculator to Solve the Equation on the Interval $0 \leq \theta < 2 \pi$

question 54

Multiple Choice

Use a calculator to solve the equation on the interval 0 $0 \leq \theta < 2 \pi$ . Round the answer to two decimal places.
- $\cos \theta = - 0.55$

• A) 2.15, 4.13
• B) 0.99, 2.15
• C) 0.99, 4.13
• D) 2.15, 5.29

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Definitions:

Numbers

Numbers assign value and relativity to phenomena. As contrasted with numerals, they can be calculated.

Numerals

Numerals are labels such as street numbers that cannot be computed.

Accurate

A description of information, data, or measurements that are correct and free from errors or inaccuracies.

Test-Retest

To determine the reliability of a measure by testing and retesting it under the same conditions. If the measure is reliable, it will produce similar results each time.