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Ch. 1 - Angles and the Trigonometric Functions
Blitzer - Trigonometry 3rd Edition
Blitzer3rd EditionTrigonometryISBN: 9780137316601Not the one you use?Change textbook
Chapter 1, Problem 5

In Exercises 5–7, convert each angle in radians to degrees. 5πœ‹ 3

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1
Recall the conversion formula from radians to degrees: \(\text{degrees} = \text{radians} \times \frac{180}{\pi}\).
Identify the given angle in radians: \(\frac{5\pi}{3}\).
Substitute the given angle into the conversion formula: \(\frac{5\pi}{3} \times \frac{180}{\pi}\).
Simplify the expression by canceling \(\pi\) in numerator and denominator: \(\frac{5 \times 180}{3}\).
Perform the division and multiplication to find the angle in degrees.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Radian Measure

A radian is a unit of angular measure based on the radius of a circle. One radian is the angle created when the arc length equals the radius. Radians provide a natural way to measure angles in terms of the circle's geometry, and many trigonometric functions use radians as their standard input.
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Degree Measure

Degrees are a common unit for measuring angles, where a full circle is divided into 360 equal parts. Each degree represents 1/360 of a full rotation. Degrees are often used in practical applications and are related to radians through a fixed conversion factor.
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Conversion Between Radians and Degrees

To convert radians to degrees, multiply the radian measure by 180/Ο€. This conversion uses the fact that Ο€ radians equal 180 degrees. For example, converting 5Ο€/3 radians to degrees involves multiplying 5Ο€/3 by 180/Ο€, simplifying to 300 degrees.
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