24) y sec X
Angles in Circles
Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.
Arcs in Circles
A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.
![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2f9e96de-8215-4532-a7d0-6f1fdf87f241%2Fb72b1320-c7fd-472a-86b2-bf55e7f3ce18%2Fyylpr39_processed.png&w=3840&q=75)

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