Find the length of the arc on a circle of radius r intercepted by a central angle 0. Round to two decimal places. Use x=3.141593. r= 3 yards, 0=65° OA. 3.06 yards O B. 3.74 yards O C. 3.40 yards O D. 2.72 yards

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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### Arc Length Calculation

#### Problem Statement:
Find the length of the arc on a circle of radius \( r \) intercepted by a central angle \( \theta \). Round to two decimal places. Use \( \pi = 3.141593 \).

#### Given:
- Radius (\( r \)): 3 yards
- Central angle (\( \theta \)): 65 degrees

### Possible Answers
A. 3.06 yards\
B. 3.74 yards\
C. 3.40 yards\
D. 2.72 yards

### Solution:
To find the arc length (\( L \)), use the formula:

\[ L = r \cdot \theta \cdot \left(\frac{\pi}{180}\right) \]

Where:
- \( r \) is the radius of the circle.
- \( \theta \) is the central angle in degrees.
- \( \pi \) is a constant (approximately 3.141593).

### Detailed Calculation:
1. Convert the central angle from degrees to radians:
   \[ \theta = 65^\circ \]
   \[ \theta \text{ (in radians)} = 65 \times \left(\frac{\pi}{180}\right) \]

2. Substitute the values:
   \[ L = 3 \cdot 65 \cdot \left(\frac{3.141593}{180}\right) \]

3. Simplify the expression:
   \[ L = 3 \cdot 65 \cdot 0.01745329252 \]
   \[ L = 3 \cdot 1.134115014 \]
   \[ L \approx 3.402345042 \]

4. Round to two decimal places:
   \[ L \approx 3.40 \text{ yards} \]

### Answer:
C. 3.40 yards

### Interactive Component:
Click to select your answer:

- \( \circ \ \) **A. 3.06 yards**
- \( \circ \ \) **B. 3.74 yards**
- \( \circ \ \) **C. 3.40 yards**
- \( \circ \ \) **D. 2.72 yards**

### Explanation:
This solution demonstrates the process of calculating the length of an arc intercepted by a central angle in a circle, using the given radius and angle measurement in
Transcribed Image Text:### Arc Length Calculation #### Problem Statement: Find the length of the arc on a circle of radius \( r \) intercepted by a central angle \( \theta \). Round to two decimal places. Use \( \pi = 3.141593 \). #### Given: - Radius (\( r \)): 3 yards - Central angle (\( \theta \)): 65 degrees ### Possible Answers A. 3.06 yards\ B. 3.74 yards\ C. 3.40 yards\ D. 2.72 yards ### Solution: To find the arc length (\( L \)), use the formula: \[ L = r \cdot \theta \cdot \left(\frac{\pi}{180}\right) \] Where: - \( r \) is the radius of the circle. - \( \theta \) is the central angle in degrees. - \( \pi \) is a constant (approximately 3.141593). ### Detailed Calculation: 1. Convert the central angle from degrees to radians: \[ \theta = 65^\circ \] \[ \theta \text{ (in radians)} = 65 \times \left(\frac{\pi}{180}\right) \] 2. Substitute the values: \[ L = 3 \cdot 65 \cdot \left(\frac{3.141593}{180}\right) \] 3. Simplify the expression: \[ L = 3 \cdot 65 \cdot 0.01745329252 \] \[ L = 3 \cdot 1.134115014 \] \[ L \approx 3.402345042 \] 4. Round to two decimal places: \[ L \approx 3.40 \text{ yards} \] ### Answer: C. 3.40 yards ### Interactive Component: Click to select your answer: - \( \circ \ \) **A. 3.06 yards** - \( \circ \ \) **B. 3.74 yards** - \( \circ \ \) **C. 3.40 yards** - \( \circ \ \) **D. 2.72 yards** ### Explanation: This solution demonstrates the process of calculating the length of an arc intercepted by a central angle in a circle, using the given radius and angle measurement in
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