Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
1. Measuring Angles
Complementary and Supplementary Angles
Problem 3.58
Textbook Question
Convert each radian measure to degrees. Write answers to the nearest minute. See Example 2(c).
5
![](/channels/images/assetPage/verifiedSolution.png)
1
Understand that to convert radians to degrees, you use the conversion factor \( \frac{180}{\pi} \).
Multiply the given radian measure by \( \frac{180}{\pi} \) to convert it to degrees. For example, multiply 5 by \( \frac{180}{\pi} \).
Calculate the product to get the degree measure in decimal form.
Separate the decimal part from the whole number to convert the decimal degrees into minutes. Multiply the decimal part by 60 to find the minutes.
Round the minutes to the nearest whole number to get the final answer in degrees and minutes.
Recommended similar problem, with video answer:
![](/channels/images/assetPage/verifiedSolution.png)
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
0m:0sPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Radian to Degree Conversion
To convert radians to degrees, use the formula: degrees = radians × (180/π). This relationship stems from the definition of a radian, which is based on the radius of a circle. Understanding this conversion is essential for solving problems that require angle measurements in different units.
Recommended video:
Converting between Degrees & Radians
Understanding Minutes in Angles
In angle measurement, a degree can be further divided into minutes, where 1 degree equals 60 minutes. This subdivision allows for more precise measurements of angles. When converting radians to degrees, it is important to express the final answer in degrees and minutes, especially when specified in the problem.
Recommended video:
Coterminal Angles
Precision in Measurement
Precision refers to the level of detail in a measurement. In this context, converting to the nearest minute means rounding the degree measurement to the closest minute value. This concept is crucial for ensuring that answers meet the required accuracy, particularly in fields that rely on precise angle measurements.
Recommended video:
Limacons
Watch next
Master Intro to Complementary & Supplementary Angles with a bite sized video explanation from Patrick Ford
Start learningRelated Videos
Related Practice