Mathematics for Machine Technology

7th Edition

ISBN: 9781133281450

Author: John C. Peterson, Robert D. Smith

Publisher: Cengage Learning

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Concept explainers

Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

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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Textbook Question

Chapter 18, Problem 22A

Solve for the unknown value in each of the following proportions. Check each answer. Round the answers to 3 decimal places where necessary.
22. 3 A = 15 30

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Chapter 18, Problem 21A

Chapter 18, Problem 23A

Chapter 18 Solutions

Mathematics for Machine Technology

Ch. 18 - Use a decimal equivalents table to find the...Ch. 18 - Compute (27.52.5+4.36)21.75 . Express the result...Ch. 18 - A cylinder has a volume, V, of 32.85 mm3. Use the...Ch. 18 - The volume V of a cube is V=s3 , where s is the...Ch. 18 - Multiply 15.328.75 .Ch. 18 - Express the decimal fraction 0.4275 as a common...Ch. 18 - Prob. 7A Ch. 18 - Express the following ratios in lowest fractional...Ch. 18 - Prob. 9A Ch. 18 - Express the following ratios in lowest fractional...

Ch. 18 - Prob. 11A Ch. 18 - Prob. 12A Ch. 18 - Prob. 13A Ch. 18 - Express the following ratios in lowest fractional...Ch. 18 - Prob. 15A Ch. 18 - Express the following ratios in lowest fractional...Ch. 18 - Prob. 17A Ch. 18 - Prob. 18A Ch. 18 - Prob. 19A Ch. 18 - In Figure 18-8, gear A is turning at 120...Ch. 18 - Solve for the unknown value in each of the...Ch. 18 - Solve for the unknown value in each of the...Ch. 18 - Prob. 23A Ch. 18 - Prob. 24A Ch. 18 - Prob. 25A Ch. 18 - Prob. 26A Ch. 18 - Prob. 27A Ch. 18 - Solve for the unknown value in each of the...Ch. 18 - Solve for the unknown value in each of the...Ch. 18 - Prob. 30A Ch. 18 - Prob. 31A Ch. 18 - Prob. 32A Ch. 18 - Prob. 33A Ch. 18 - Prob. 34A Ch. 18 - Prob. 35A Ch. 18 - Prob. 36A Ch. 18 - Prob. 37A Ch. 18 - Prob. 38A Ch. 18 - Prob. 39A Ch. 18 - Prob. 40A Ch. 18 - Prob. 41A Ch. 18 - Prob. 42A Ch. 18 - Prob. 43A Ch. 18 - Prob. 44A Ch. 18 - Prob. 45A Ch. 18 - Prob. 46A Ch. 18 - Prob. 47A Ch. 18 - A drawing has a scale of 14=3 . Determine the...

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The length, L, of the standard 82° included angle drill can be calculated using the formula L=0.575 , where Ø represents the diameter of the drill. Determine the length of a drill point with a diameter of 12.5 mm. Round your answer to 1 decimal place.

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