Algebra2 y trigonometria

AMSCO’S

ALGEBRA 2 TRIGONOMETRY
Ann Xavier Gantert

and

A M S C O S C H O O L P U B L I C AT I O N S, I N C . 3 1 5 H U D S O N S T R E E T, N E W YO R K , N. Y. 1 0 0 1 3

Dedication To Jessica Alexander and Uriel Avalos in gratitude for their invaluable work in preparing this text for publication. Ann Xavier Gantert The author has been associated with mathematics education in NewYork State as a teacher and an author throughout the many changes of the past fifty years. She has worked as a consultant to the Mathematics Bureau of the Department of Education in the development and writing of Sequential Mathematics and has been a coauthor of Amsco’s Integrated Mathematics series, which accompanied that course of study. Reviewers: Richard Auclair Mathematics Teacher La SalleSchool Albany, NY
Domenic D’Orazio Mathematics Teacher Midwood High School Brooklyn, NY Steven J. Balasiano Assistant Principal, Supervision Mathematics Canarsie High School Brooklyn, NY George Drakatos Mathematics Teacher Baldwin Senior High School Baldwin, NY Debbie Calvino Mathematics Supervisor, Grades 7–12 Valley Central High School Montgomery, NY Ronald Hattar Mathematics Chairperson EastchesterHigh School Eastchester, NY Raymond Scacalossi Jr. Mathematics Coordinator Manhasset High School Manhasset, NY

Text Designer: Nesbitt Graphics, Inc. Compositor: ICC Macmillan Cover Design by Meghan J. Shupe Cover Art by Radius Images (RM)

Please visit our Web site at: www.amscopub.com When ordering this book, please specify: R 159 P or ALGEBRA 2 AND TRIGONOMETRY, Paperback or R 159 H orALGEBRA 2 AND TRIGONOMETRY, Hardbound
ISBN 978-1-56765-703-6 (Paperback edition) NYC Item 56765-703-5 (Paperback edition) Copyright © 2009 by Amsco School Publications, Inc. No part of this book may be reproduced in any form without written permission from the publisher. Printed in the United States of America 1 2 3 4 5 6 7 8 9 10 14 13 12 11 10 09 08 ISBN 978-1-56765-702-9 (Hardbound edition) NYCItem 56765-702-8 (Hardbound edition)

PREFACE
Algebra 2 and Trigonometry is a new text for a course in intermediate algebra and trigonometry that continues the approach that has made Amsco a leader in presenting mathematics in a modern, integrated manner. Over the last decade, this approach has undergone numerous changes and refinements to keep pace with ever-changing technology.
This textbookis the final book in the three-part series in which Amsco parallels the integrated approach to the teaching of high school mathematics promoted by the National Council of Teachers of Mathematics in its Principles and Standards for School Mathematics and mandated by the New York State Board of Regents in the Mathematics Core Curriculum. The text presents a range of materials and explanations thatare guidelines for achieving a high level of excellence in their understanding of mathematics. In this book:

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The real numbers are reviewed and the understanding of operations with irrational numbers, particularly radicals, is expanded. The graphing calculator continues to be used as a routine tool in the study of mathematics. Its use enables the student to solve problems that requirecomputation that more realistically reflects the real world. The use of the calculator replaces the need for tables in the study of trigonometry and logarithms. Coordinate geometry continues to be an integral part of the visualization of algebraic and trigonometric relationships. Functions represent a unifying concept throughout. The algebraic functions introduced in Integrated Algebra 1 arereviewed, and exponential, logarithmic, and trigonometric functions are presented. Algebraic skills from Integrated Algebra 1 are maintained, strengthened, and expanded as both a holistic approach to mathematics and as a bridge to advanced studies. Statistics includes the use of the graphing calculator to reexamine range, quartiles, and interquartile range, to introduce measures of dispersion such as...