Movement of a Minute Hand The minute hand of a clock is 6 inches long. How far does the tip of the minute hand move in 15 minutes? How far does it move in 25 minutes? Round answers to two decimal places.

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°.
icon
Related questions
icon
Concept explainers
Topic Video
Question
### Applications and Extensions

#### 91. Movement of a Minute Hand

The minute hand of a clock is 6 inches long. How far does the tip of the minute hand move in 15 minutes? How far does it move in 25 minutes? Round answers to two decimal places.

![Clock](data:image/png;base64,...) (An image of a clock with the minute hand pointing at 3 and the hour hand pointing at 12)

Explanation:
1. **Understanding Clock Movement:**
   - The minute hand completes a full circle (360 degrees) in 60 minutes.
   - In 15 minutes, the minute hand covers a quarter of the clock (360/4 = 90 degrees).
   - In 25 minutes, the minute hand covers 25/60 of the clock (360 * 25/60 = 150 degrees).

2. **Calculations:**
   - **Arc Length Formula**: \( \text{Arc Length} = \theta \times r \times \left( \frac{\pi}{180} \right) \)
   - Where \( \theta \) is the angle in degrees, \( r \) is the radius (length of the minute hand), and \(\pi\) is approximately 3.14.

### For 15 minutes:
\[ \text{Arc Length} = 90 \times 6 \times \left( \frac{\pi}{180} \right) \]
\[ = 90 \times 6 \times \left( \frac{3.14}{180} \right) \]
\[ = 90 \times 6 \times 0.01745 \]
\[ = 9.42 \text{ inches (rounded to two decimal places)} \]

### For 25 minutes:
\[ \text{Arc Length} = 150 \times 6 \times \left( \frac{\pi}{180} \right) \]
\[ = 150 \times 6 \times \left( \frac{3.14}{180} \right) \]
\[ = 150 \times 6 \times 0.01745 \]
\[ = 15.71 \text{ inches (rounded to two decimal places)} \]

Therefore:
- The minute hand moves **9.42 inches** in 15 minutes.
- The minute hand moves **15.71 inches** in 25 minutes.
Transcribed Image Text:### Applications and Extensions #### 91. Movement of a Minute Hand The minute hand of a clock is 6 inches long. How far does the tip of the minute hand move in 15 minutes? How far does it move in 25 minutes? Round answers to two decimal places. ![Clock](data:image/png;base64,...) (An image of a clock with the minute hand pointing at 3 and the hour hand pointing at 12) Explanation: 1. **Understanding Clock Movement:** - The minute hand completes a full circle (360 degrees) in 60 minutes. - In 15 minutes, the minute hand covers a quarter of the clock (360/4 = 90 degrees). - In 25 minutes, the minute hand covers 25/60 of the clock (360 * 25/60 = 150 degrees). 2. **Calculations:** - **Arc Length Formula**: \( \text{Arc Length} = \theta \times r \times \left( \frac{\pi}{180} \right) \) - Where \( \theta \) is the angle in degrees, \( r \) is the radius (length of the minute hand), and \(\pi\) is approximately 3.14. ### For 15 minutes: \[ \text{Arc Length} = 90 \times 6 \times \left( \frac{\pi}{180} \right) \] \[ = 90 \times 6 \times \left( \frac{3.14}{180} \right) \] \[ = 90 \times 6 \times 0.01745 \] \[ = 9.42 \text{ inches (rounded to two decimal places)} \] ### For 25 minutes: \[ \text{Arc Length} = 150 \times 6 \times \left( \frac{\pi}{180} \right) \] \[ = 150 \times 6 \times \left( \frac{3.14}{180} \right) \] \[ = 150 \times 6 \times 0.01745 \] \[ = 15.71 \text{ inches (rounded to two decimal places)} \] Therefore: - The minute hand moves **9.42 inches** in 15 minutes. - The minute hand moves **15.71 inches** in 25 minutes.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 1 images

Blurred answer
Knowledge Booster
Application of Algebra
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, trigonometry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Trigonometry (11th Edition)
Trigonometry (11th Edition)
Trigonometry
ISBN:
9780134217437
Author:
Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:
PEARSON
Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
Trigonometry
ISBN:
9781305652224
Author:
Charles P. McKeague, Mark D. Turner
Publisher:
Cengage Learning
Algebra and Trigonometry
Algebra and Trigonometry
Trigonometry
ISBN:
9781938168376
Author:
Jay Abramson
Publisher:
OpenStax
Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
Trigonometry
ISBN:
9781337278461
Author:
Ron Larson
Publisher:
Cengage Learning