Explanation Given: The area of the sector A = 79.4 inch 2 . The central angle of the sector θ = 307.2 o . When a circle is divided in such a manner that two radius and an arc constitute the two portions of the circle. Each portion is called a circular sector. The smaller area is called the minor sector while the larger area is termed as the major sector. The Area of the sector can be calculated from the following formula A = π r 2 × ( θ 360 ) ° ... (1) Where r = Radius of the sector θ = Central angle of the sector in degrees Now putting the given values of area and central angle in equation 1. 79.4 = π ( r ) 2 × ( 307.2 360 ) ° 1 ( r ) 2 = π 79

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ISBN: 9781337798310

Author: Peterson, John.

Publisher: Cengage Learning,

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Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.

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Chapter 61, Problem 34A

To determine

The radius of the sector for given values of area and central angle.

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Mathematics For Machine Technology

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