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Chapter 5: Problem 105

Which is the larger angle, \(1^{\circ}\) or 1 radian? Explain.

Short Answer

Expert verified
1 radian is the larger angle.

Step by step solution

01

Convert 1 radian to degrees

Using the conversion factor of \(1 radian \approx 57.296^\circ\), convert 1 radian to degrees.
02

Compare the two angles

After converting, compare \(1^{\circ}\) with \(57.296^{\circ}\) to determine which angle is larger.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Radians to Degrees
Converting angles from radians to degrees is a fundamental aspect of geometry and trigonometry. Radians and degrees are both units used to measure angles, but they are different in scale. A full circle, for instance, is equivalent to 360 degrees or \(2\pi\) radians.

To convert radians to degrees, you utilize the conversion factor \(180/\pi\). This means that one radian is expressed in degrees as follows:
  • Multiply the radian measure by \(180/\pi\).
  • For practical purposes, remember that \(1\, \text{radian} \approx 57.296^{\circ}\).
So, for the angle given in the exercise, 1 radian is approximately \(57.296^{\circ}\). Knowing how to easily convert between these two units allows for comparison and analysis, especially in problems where both units are used.
Degree Measurement
Degrees are a crucial tool for measuring angles in many aspects of mathematics and science. A single degree \((1^{\circ})\) is one 360th of a full circle. Therefore, a full circle has \(360^{\circ}\) in total. This system is very intuitive for many applications due to its simplicity and the divisibility of 360.

When considering comparisons or conversions, it's essential to understand the scale of degrees. For example:
  • A right angle measures \(90^{\circ}\).
  • A straight angle is \(180^{\circ}\).
This knowledge provides the baseline against which other angle measurements can be compared, including radians. Understanding degree measurement allows you to visualize and analyze angles effectively in many practical and theoretical scenarios.
Angle Comparison
To determine which angle is larger, you must compare their magnitudes in the same unit. For instance, in this exercise, we face an angle in degrees and one in radians. To simplify comparisons, it's often easier to convert all measurements to degrees or radians first.
  • Given: \(1^{\circ} \) (degree measure) and 1 radian.
  • Converted: 1 radian\( \approx 57.296^{\circ}\).
  • Comparison: Compare \(1^{\circ}\) with \(57.296^{\circ}\).
Clearly, \(57.296^{\circ}\) is much larger than \(1^{\circ}\). Such comparisons are vital in evaluating the size of angles, whether in geometry, trigonometry, or real-world applications. Being able to seamlessly convert and compare these measurements aids in better understanding and solving geometrical problems effectively.

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Most popular questions from this chapter

Graph at least two cycles of the given functions. $$f(x)=-2 \sin \left(x-\frac{\pi}{4}\right)$$

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This set of exercises will draw on the ideas presented in this section and your general math background. Does the equation \(\sin (t+\pi)=\sin t+\sin \pi\) hold for all \(t\) ? Explain.

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