24) y sec X

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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The equation to be graphed is:

\[ y = \frac{2}{5} \sec \left( \frac{1}{2}x - \frac{\pi}{4} \right) \]

Graph Explanation:

- **Axes**: The graph has horizontal and vertical axes labeled as \(x\) and \(y\) respectively. The axes are marked with evenly spaced tick marks to aid in plotting.
- **Grid**: There is a dot grid on the graph to assist with plotting points and visualize the behavior of the function more easily.
- **Function Characteristics**: 
  - The function involves the secant (\(\sec\)) function, which is the reciprocal of the cosine function. 
  - The expression inside the secant function includes a transformation that involves a horizontal scaling by \(\frac{1}{2}\) and a phase shift of \(-\frac{\pi}{4}\).
  - The amplitude is affected by the factor \(\frac{2}{5}\), which vertically compresses the graph of the secant function.

This example demonstrates how to plot trigonometric functions and understand transformations such as stretching, shifting, and scaling.
Transcribed Image Text:The equation to be graphed is: \[ y = \frac{2}{5} \sec \left( \frac{1}{2}x - \frac{\pi}{4} \right) \] Graph Explanation: - **Axes**: The graph has horizontal and vertical axes labeled as \(x\) and \(y\) respectively. The axes are marked with evenly spaced tick marks to aid in plotting. - **Grid**: There is a dot grid on the graph to assist with plotting points and visualize the behavior of the function more easily. - **Function Characteristics**: - The function involves the secant (\(\sec\)) function, which is the reciprocal of the cosine function. - The expression inside the secant function includes a transformation that involves a horizontal scaling by \(\frac{1}{2}\) and a phase shift of \(-\frac{\pi}{4}\). - The amplitude is affected by the factor \(\frac{2}{5}\), which vertically compresses the graph of the secant function. This example demonstrates how to plot trigonometric functions and understand transformations such as stretching, shifting, and scaling.
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