By Richard N. Aufmann, Vernon C. Barker, Richard D. Nation

Available to scholars and versatile for teachers, collage Trigonometry, 6th variation, makes use of the dynamic hyperlink among strategies and purposes to deliver arithmetic to lifestyles. through incorporating interactive studying options, the Aufmann group is helping scholars to higher comprehend innovations, paintings independently, and procure higher mathematical fluency. The textual content additionally comprises know-how gains to deal with classes that let the choice of utilizing graphing calculators. extra application parts that aid pupil luck contain Eduspace educational perform, on-line homework, SMARTHINKING stay on-line Tutoring, and educational DVDs.The authors' confirmed Aufmann Interactive strategy permits scholars to attempt a ability because it is gifted in instance shape. This interplay among the examples and take a look at routines serves as a checkpoint to scholars as they learn the textbook, do their homework, or research a piece. within the 6th variation, evaluation Notes are featured extra prominently through the textual content to assist scholars realize the most important prerequisite abilities had to comprehend new strategies.

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**Sample text**

This would mean that two students with the same score received different grades, one student an A and the other a B! Functions may have ordered pairs with the same second coordinate. 1. A function may have different first coordinates and the same second coordinate. The equation d 16t 2 represents a function because for each value of t there is only one value of d. Not every equation, however, represents a function. For instance, y 2 25 Ϫ x 2 does not represent a function. The ordered pairs ͑Ϫ3, 4͒ and ͑Ϫ3, Ϫ4͒ are both solutions of the equation.

Explain how to determine the x- and y-intercepts of a graph defined by an equation (without using the graph). 2 In Exercises 1 and 2, plot the points whose coordinates are given on a Cartesian coordinate system. 1. ͑2, 4͒, ͑0, Ϫ3͒, ͑Ϫ2, 1͒, ͑Ϫ5, Ϫ3͒ 2. ͑Ϫ3, Ϫ5͒, ͑Ϫ4, 3͒, ͑0, 2͒, ͑Ϫ2, 0͒ 3. PER CAPITA INCOME The following graph, based on data from the Bureau of Economic Analysis, shows the annual per capita income (total income earned divided by population) in the United States for selected years.

13 we have plotted the points ͑4, 3͒, ͑Ϫ3, 1͒, ͑Ϫ2, Ϫ3͒, ͑3, Ϫ2͒, ͑0, 1͒, ͑1, 3͒, and ͑3, 1͒. Note that ͑1, 3͒ and ͑3, 1͒ are not the same point. The order in which the coordinates of an ordered pair are listed is important. dimensional number line. In this y section, (a, b) denotes an ordered pair in a two-dimensional plane. 4 This should not cause confusion in (1, 3) (4, 3) (0, 1) (3, 1) 2 future sections because as each (−3, 1) mathematical topic is introduced, −4 it will be clear whether a one- −2 2 −2 dimensional or a two-dimensional 4 x (3, −2) (−2, −3) coordinate system is involved.

### College Trigonometry (6th Edition) by Richard N. Aufmann, Vernon C. Barker, Richard D. Nation

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