6. Observe the following PacMan. Recall that the x and y coordinates of any point on the unit circle are obtained by the relation (x, y) = (cos(0), sin(0)), where 0 is the angle between the ray connecting the point to the origin and the positive x-axis. (a) Describe PacMan (the set P) in polar coordinates. (b) Evaluate S Lx dA. Give your answer in exact form, not a decimal ap- proximation.

Calculus: Early Transcendentals
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Chapter1: Functions And Models
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6. Observe the following PacMan. Recall that the \( x \) and \( y \) coordinates of any point on the unit circle are obtained by the relation \( (x, y) = (\cos(\theta), \sin(\theta)) \), where \( \theta \) is the angle between the ray connecting the point to the origin and the positive \( x \)-axis.

(a) Describe PacMan (the set \( P \)) in polar coordinates.

(b) Evaluate \( \int \int_P x \, dA \). Give your answer in exact form, not a decimal approximation.

---

**Diagram Explanation:**

The diagram represents a circular sector resembling the character PacMan. The circle has a radius of 1 (unit circle). The sector labeled \( P \) is the region of the circle not included in the slice that forms the mouth of PacMan.

In the diagram:

- The circle is centered at the origin \((0, 0)\) in the \( xy \)-coordinate system.
- The positive \( x \)-axis is indicated, with \( x = 1 \) and \( y = 0 \).
- The radius forms an angle that splits the circle, with another line at \( x = \frac{-1}{\sqrt{2}} \), which likely defines the boundary of the PacMan's mouth. 

The main focus is on describing this sector in polar coordinates and evaluating the integral over the region \( P \).
Transcribed Image Text:6. Observe the following PacMan. Recall that the \( x \) and \( y \) coordinates of any point on the unit circle are obtained by the relation \( (x, y) = (\cos(\theta), \sin(\theta)) \), where \( \theta \) is the angle between the ray connecting the point to the origin and the positive \( x \)-axis. (a) Describe PacMan (the set \( P \)) in polar coordinates. (b) Evaluate \( \int \int_P x \, dA \). Give your answer in exact form, not a decimal approximation. --- **Diagram Explanation:** The diagram represents a circular sector resembling the character PacMan. The circle has a radius of 1 (unit circle). The sector labeled \( P \) is the region of the circle not included in the slice that forms the mouth of PacMan. In the diagram: - The circle is centered at the origin \((0, 0)\) in the \( xy \)-coordinate system. - The positive \( x \)-axis is indicated, with \( x = 1 \) and \( y = 0 \). - The radius forms an angle that splits the circle, with another line at \( x = \frac{-1}{\sqrt{2}} \), which likely defines the boundary of the PacMan's mouth. The main focus is on describing this sector in polar coordinates and evaluating the integral over the region \( P \).
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