Find Approximate Solutions for the Equation in the Interval $-\pi<\mathbf{X}<\pi$

question 19

Multiple Choice

Find approximate solutions for the equation in the interval $-\pi<\mathbf{X}<\pi$ . Round to three decimal places.
- $3 \cos x = \sec x$

• A) \(- 2.186,2.186\)
• B) \(- 1.955 , - 0.862,0.862,1.955\)
• C) \(- 2.186 , - 0.955,0.955,2.186\)
• D) \(- 0.955,0.955\)

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Definitions:

Sample Proportion

The ratio of members in a sample that have a particular characteristic to the total number of members in the sample.

Standard Error

The standard deviation of the sampling distribution of a statistic, especially of the mean.

Sample Mean

The average value calculated from a sample of observations from a larger population.

Population Standard Deviation

A measure of the dispersion or spread of a set of data points in a population, representing the square root of the variance.