Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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**Quadrants in Radian Measure**

Given an angle in radians that lies within the interval \([0, 2\pi)\), we define the quadrants as follows:
- **First Quadrant:** \( [0, \frac{\pi}{2}) \)
- **Second Quadrant:** \( [\frac{\pi}{2}, \pi) \)
- **Third Quadrant:** \( [\pi, \frac{3\pi}{2}) \)
- **Fourth Quadrant:** \( [\frac{3\pi}{2}, 2\pi) \)

**which_quadrant Function**

**Input Variables:**
- A scalar representing an angle in radians within the interval \([0, 2\pi)\).

**Output Variables:**
- A string which states:
  - "XX is in the first quadrant"
  - "XX is in the second quadrant"
  - "XX is in the third quadrant"
  - "XX is in the fourth quadrant"

where \( XX \) is the floating-point representation of the angle.

**Sample Case:**
```plaintext
>> quadrant = which_quadrant(pi/4)
quadrant = 0.785398 is in the first quadrant
```
expand button
Transcribed Image Text:**Quadrants in Radian Measure** Given an angle in radians that lies within the interval \([0, 2\pi)\), we define the quadrants as follows: - **First Quadrant:** \( [0, \frac{\pi}{2}) \) - **Second Quadrant:** \( [\frac{\pi}{2}, \pi) \) - **Third Quadrant:** \( [\pi, \frac{3\pi}{2}) \) - **Fourth Quadrant:** \( [\frac{3\pi}{2}, 2\pi) \) **which_quadrant Function** **Input Variables:** - A scalar representing an angle in radians within the interval \([0, 2\pi)\). **Output Variables:** - A string which states: - "XX is in the first quadrant" - "XX is in the second quadrant" - "XX is in the third quadrant" - "XX is in the fourth quadrant" where \( XX \) is the floating-point representation of the angle. **Sample Case:** ```plaintext >> quadrant = which_quadrant(pi/4) quadrant = 0.785398 is in the first quadrant ```
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