Math Problem Statement
Here is the graph of y = cos x° -360 ≤ x ≤ 360.
What are the coordinates of A? (
,
)
What are the coordinates of B? (
,
)
Solution
To find the coordinates of points A and B on the graph of for , we need to analyze the graph provided. Based on the typical shape of the cosine curve, we can determine:
-
Point A: This appears to be a point where the cosine graph crosses the positive -axis. Typically, for , the cosine function equals zero at and , depending on the range. However, from the image, point A seems to be positioned at , as it marks the rightmost peak of the cosine wave.
Therefore, the coordinates of A are approximately .
-
Point B: This is the point where the cosine graph reaches its minimum, which typically occurs at for the cosine function. Visually, it seems that point B represents the lowest part of the wave in the negative region of the -axis. From the typical behavior of , the minimum value of the cosine function is at .
Therefore, the coordinates of B are approximately .
Would you like further clarification or additional details about how the cosine function behaves over different intervals?
Here are five follow-up questions to deepen your understanding:
- What is the general shape of the cosine function, and how does it compare to the sine function?
- How do the amplitude and period affect the shape of the graph of ?
- Can you explain the significance of the points where the graph crosses the x-axis?
- How do transformations such as horizontal or vertical shifts affect the cosine graph?
- What is the mathematical formula for determining the period of a cosine function?
Tip: When analyzing trigonometric graphs, pay attention to key points like the maxima, minima, and zero crossings. These can help you quickly determine the behavior of the function over a given interval.
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Graph Analysis
Cosine Function
Formulas
y = cos(x°)
Theorems
Cosine Function Properties
Suitable Grade Level
Grades 9-11