Explanation Given Information: The provided lengths of cushion and back of the seat are 20 in and 34 in, angle between them is 140 ° . Formula used: According to the laws of cosines: a 2 = b 2 + c 2 − 2 b c cos A Where, a, b, c are the sides of a triangle ABC and A is angle opposite to the side a . Calculation: Consider the lengths of cushion and back of the seat and angle between them, 20 in, 34 in and 140 ° Now let A be the angle between the sides 20 in, 34 in and draw a figure as shown below:

12th Edition

ISBN: 9781337630580

Author: Dale Ewen

Publisher: Cengage Learning

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Chapter 14.5, Problem 20E

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To calculate: The length between the tip of the cushion and tip of the headrest when the cushion is 20 in. in length and back of the seat, including the headrest, is 34 in. in length. This automobile seat is reclined at an angle of 140°.

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Chapter 14.5, Problem 19E

Chapter 14.5, Problem 21E

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Chapter 14 Solutions

Elementary Technical Mathematics

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The length between the tip of the cushion and tip of the headrest when the cushion is 20 in. in length and back of the seat, including the headrest, is 34 in. in length. This automobile seat is reclined at an angle of 140 ° .

Solution Summary: The author calculates the length between the cushion and the headrest, based on the laws of cosines.

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To calculate: The length between the tip of the cushion and tip of the headrest when the cushion is 20 in. in length and back of the seat, including the headrest, is 34 in. in length. This automobile seat is reclined at an angle of 140°.

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Chapter 14 Solutions