Chapter 6: Problem 9
Convert the radian measures to degrees. (a) \(\pi / 12\) (b) \(\pi / 6\) (c) \(\pi / 4\)
Short Answer
Expert verified
(a) 15掳, (b) 30掳, (c) 45掳
Step by step solution
01
Understand the Conversion Formula
To convert radians to degrees, use the conversion formula: multiply the radian measure by \( \frac{180}{\pi} \). This formula derives from the fact that \( 180^{\circ} \) is equivalent to \( \pi \) radians.
02
Convert \( \pi / 12 \) Radians to Degrees
Using the conversion formula, the degree measure is calculated as: \( \frac{\pi}{12} \times \frac{180}{\pi} = \frac{180}{12} = 15^{\circ} \).
03
Convert \( \pi / 6 \) Radians to Degrees
Using the conversion formula, the degree measure is calculated as: \( \frac{\pi}{6} \times \frac{180}{\pi} = \frac{180}{6} = 30^{\circ} \).
04
Convert \( \pi / 4 \) Radians to Degrees
Using the conversion formula, the degree measure is calculated as: \( \frac{\pi}{4} \times \frac{180}{\pi} = \frac{180}{4} = 45^{\circ} \).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Radian Measure
Radian measure is a way of expressing angles based on the radius of a circle. It provides a pure number that describes the size of an angle. In a circle, the radian is defined as the angle created when the arc length is equal to the radius. To put it simply, one radian is the angle formed when the circle's radius is wrapped around its circumference.
When measuring angles in radians, it is important to remember that this is commonly used in advanced mathematics and engineering. Radians provide a more direct connection with various mathematical functions, making them ideal for calculus and trigonometry.
In terms of comparison, a full circle is approximately 6.28 radians, since a full circle's circumference is the equivalent of 2蟺 radii. This corresponds to 360 degrees. Therefore, understanding radians helps you navigate more complex mathematical surroundings involving periodic functions like sines and cosines.
The radian measure provides precision and simplicity in certain contexts, making it the preferred unit in several scientific and engineering applications.
When measuring angles in radians, it is important to remember that this is commonly used in advanced mathematics and engineering. Radians provide a more direct connection with various mathematical functions, making them ideal for calculus and trigonometry.
In terms of comparison, a full circle is approximately 6.28 radians, since a full circle's circumference is the equivalent of 2蟺 radii. This corresponds to 360 degrees. Therefore, understanding radians helps you navigate more complex mathematical surroundings involving periodic functions like sines and cosines.
The radian measure provides precision and simplicity in certain contexts, making it the preferred unit in several scientific and engineering applications.
Degree Measure
The degree measure is a way to express angles by dividing a circle into 360 equal parts. Each part is one degree
",
Conversion Formula
To easily move between radian and degree measures, we need to use the conversion formula.This formula, which stems from the fact that there are 180 degrees in which is an easier number to grasp intuitively.": "The degree measure provides a straightforward way to appreciate and align angles in everyday scenarios, like navigation and standard articulation. Since people commonly understand either right angles (90掳) or straight angles (180掳), the practical usability of degrees is widespread.
The degree measure gives an accessible way to visualize angles around us. For instance, most building and architectural plans use degrees rather than radians. Because it breaks a full circle into 360 segments, degrees allow for a clear view of compass directions and many day-to-day illustrations.
While degrees are familiar and intuitive, they are not as suitable for mathematical equations as radians. Still, understanding degree measure provides a foundational base for grasping the geometry and spatial thinking necessary for both academic and practical applications." 锌芯褟褋薪褨褌褜 褎芯褉屑褍谢褍 泻芯薪胁械褉褌邪褑褨褩 褍屑芯胁薪懈褏 芯写懈薪懈褑褜 泻褍褌邪 蟹 褉邪写褨邪薪褨胁 褍 谐褉邪写褍褋懈. radians and 蟺 radians represent 180 degrees. To convert radians to degrees:- Multiply the radian measure by \(\frac{180}{\pi}\).- This formula gives the equivalent angle in degrees.
The degree measure gives an accessible way to visualize angles around us. For instance, most building and architectural plans use degrees rather than radians. Because it breaks a full circle into 360 segments, degrees allow for a clear view of compass directions and many day-to-day illustrations.
While degrees are familiar and intuitive, they are not as suitable for mathematical equations as radians. Still, understanding degree measure provides a foundational base for grasping the geometry and spatial thinking necessary for both academic and practical applications." 锌芯褟褋薪褨褌褜 褎芯褉屑褍谢褍 泻芯薪胁械褉褌邪褑褨褩 褍屑芯胁薪懈褏 芯写懈薪懈褑褜 泻褍褌邪 蟹 褉邪写褨邪薪褨胁 褍 谐褉邪写褍褋懈. radians and 蟺 radians represent 180 degrees. To convert radians to degrees:- Multiply the radian measure by \(\frac{180}{\pi}\).- This formula gives the equivalent angle in degrees.
- The conversion formula is helpful for translating mathematical results into more common measurements.
- The radian-to-degree formula is crucial when your work involves angles, such as in geometry, trigonometry, or physics.