- $\cos \theta = \frac { 1 } { 2 }$

question 168

Multiple Choice

$$\text { Find all values of } \theta \text {, if } \theta \text { is in the interval } \left[ 0,360 ^ { \circ } \right) \text { and has the given function value. }$$
- $\cos \theta = \frac { 1 } { 2 }$

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

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Definitions:

Tchebysheff's Theorem

A statistical rule stating that for any dataset, regardless of distribution, a certain minimum percentage of values must lie within a specified number of standard deviations from the mean.

Population Mean

A calculation of the central value among all data points in a population.

Sample Mean

The average of a set of numerical values taken from a sample.

Grouped Data

Data that has been organized into groups or categories, often to simplify analysis and identify patterns within the data set.