Find All Values of θ, If θ Is in the Interval

question 45

Multiple Choice

Find all values of θ, if θ is in the interval [0, 360°) and has the given function value.
- $\cos \theta = - \frac { \sqrt { 3 } } { 2 }$

• A) \(210 ^ { \circ }\) and \(330 ^ { \circ }\)
• B) \(150 ^ { \circ }\) and \(210 ^ { \circ }\)
• C) \(60 ^ { \circ }\) and \(300 ^ { \circ }\)
• D) \(60 ^ { \circ }\) and \(120 ^ { \circ }\)

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Definitions:

Sample Means

The arithmetic average of a set of values chosen from a larger population for the purpose of statistical analysis.

Process Control

Techniques and methods used to monitor, manage, and adjust processes to ensure they operate within desired parameters and produce outputs of consistent quality.

Assignable Variation

Fluctuations in a process resulting from concrete causes, as opposed to unpredictable variation.

Pooled Standard Deviation

A method to estimate the standard deviation from several different samples taken from similar populations.