Automotive Holiday Deals Books Gift Guide Books Gift Guide Shop Men's Athletic Shoes Learn more nav_sap_SWP_6M_fly_beacon Indie for the Holidays egg_2015 All-New Amazon Fire TV Beauty Deals Gifts for Her May The Best Garden Be Yours Amazon Gift Card Offer cm15 cm15 cm15 $30 Off Amazon Echo $30 Off Fire HD 6 Kindle Cyber Monday Deals Classics and Essentials in CDs & Vinyl Shop Now BGG
Trigonometry (Gelfand Mathematical Seminar) and over one million other books are available for Amazon Kindle. Learn more

Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required.

  • Apple
  • Android
  • Windows Phone
  • Android

To get the free app, enter your email address or mobile phone number.

Trigonometry 2001st Edition

14 customer reviews
ISBN-13: 978-0817639143
ISBN-10: 0817639144
Why is ISBN important?
This bar-code number lets you verify that you're getting exactly the right version or edition of a book. The 13-digit and 10-digit formats both work.
Scan an ISBN with your phone
Use the Amazon App to scan ISBNs and compare prices.
Sell yours for a Gift Card
We'll buy it for $9.71
Learn More
Trade in now
Have one to sell? Sell on Amazon
Buy used On clicking this link, a new layer will be open
$17.25 On clicking this link, a new layer will be open
Buy new On clicking this link, a new layer will be open
$26.74 On clicking this link, a new layer will be open
More Buying Choices
29 New from $21.89 24 Used from $17.25
Free Two-Day Shipping for College Students with Amazon Student Free%20Two-Day%20Shipping%20for%20College%20Students%20with%20Amazon%20Student

Get Up to 80% Back Rent Textbooks
$26.74 FREE Shipping on orders over $35. In Stock. Ships from and sold by Gift-wrap available.

Frequently Bought Together

  • Trigonometry
  • +
  • Algebra
  • +
  • Functions and Graphs (Dover Books on Mathematics)
Total price: $66.99
Buy the selected items together

Special Offers and Product Promotions

  • Take an Extra 30% Off Any Book: Use promo code HOLIDAY30 at checkout to get an extra 30% off any book for a limited time. Excludes Kindle eBooks and Audible Audiobooks. Restrictions apply. Learn more | Shop now

Editorial Reviews


"Cover[s] all of the basic topics that a high school or beginning university student should be expected to know.... There are...some nice touches; for example, a nice informal discussion showing that the sine of an angle in a right triangle does not depend on whether the sides are measured in inches or centimeters..."


"Covers all the basics of the subject through beautiful illustrations and examples…. Throughout, the treatment stimulates the reader to think of mathematics as a unified subject."

— L'enseignement Mathématique

"As a teacher I enjoyed this book enormously and I will doubtless borrow many of the plums to spice up my lessons…. [For] that ideal student who is to be prepared to be challenged to think what the subject is really about, and has the patience to excavate the basic ideas for all they are worth before jumping on to the next chapter, it should prove to be a godsend."

—The Mathematical Gazette

"The authors tried to explain the results of trigonometry as simply as possible…. The exercises include a few problems of each routine type. Most of the problems exhibit a new aspect of the technique or object under discussion. One of the goals of this book is to prepare students for a course in calculus. We recommend it for teachers and students."

—Publicationes Mathematicae


Teacher Supplies
Browse our Teacher Supplies store, with everything teachers need to educate students and expand their learning.

Product Details

  • Series: Gelfand Mathematical Seminar
  • Paperback: 229 pages
  • Publisher: Birkhäuser; 2001 edition (June 8, 2001)
  • Language: English
  • ISBN-10: 0817639144
  • ISBN-13: 978-0817639143
  • Product Dimensions: 6 x 0.6 x 9 inches
  • Shipping Weight: 15 ounces (View shipping rates and policies)
  • Average Customer Review: 3.6 out of 5 stars  See all reviews (14 customer reviews)
  • Amazon Best Sellers Rank: #217,277 in Books (See Top 100 in Books)

More About the Author

Discover books, learn about writers, read author blogs, and more.

Customer Reviews

Most Helpful Customer Reviews

65 of 67 people found the following review helpful By N. F. Taussig on September 23, 2004
Format: Paperback
This text, which is designed as a supplement to a trigonometry course, is noteworthy for the clarity of its explanations, the connections it draws between trigonometry and other mathematical topics, its many challenging problems, and its numerous worked and illustrated examples. Of particular interest are the appendices to the later chapters in which the authors relate trigonometry to Pythagorean triples, use sequences of trigonometric functions to approximate pi, and introduce Fourier series.

After reviewing the geometry of the triangle, the authors cover right triangle trigonometry, the relationship between trigonometry and the geometry of the triangle, unit circle trigonometry, trigonometric formulas and identities, graphs of trigonometric functions, and inverse trigonometric functions. The authors make every effort to explain why the results hold and how to use them. Rather than presenting a self-contained treatment, the authors make every effort to connect trigonometry with other branches of mathematics, thereby providing the reader with many fascinating insights.

The problems are designed to be challenging. The reader who diligently studies the numerous worked examples in the text and works through the problems will acquire considerable knowledge of the subject. Solutions to the problems are not provided in the text.

I also highly recommend the other texts in the Gelfand School Outreach Program. They include The Method of Coordinates, Algebra, and Functions and Graphs (Dover Books on Mathematics).
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
54 of 57 people found the following review helpful By LimehouseBlues on October 5, 2006
Format: Paperback Verified Purchase
Finally - a trig book that doesn't talk down to students. Gelfand treats his readers as intellegent, curious, and competent. This goes far ... especially with kids.

Most other trig books are written by educational consultants who view the subject as a odorous swamp that you have to slog through. They distract the reader with glitzy graphics and useless photos. No such chartjunk here. It's from someone who loves the subject, and places the mathematics first.

I feel like an avuncular mathematician is showing me the delights of trig ... indeed, he seems to revel in sines, cosines, and tangents. Several of the problems have tickled my 10 year old son: "Dad! Did you know that the area under the first half of the sine curve is exactly 2?"

Aaah. Now *that's* a great trig book!
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
50 of 57 people found the following review helpful By L. D. Rafey on June 14, 2006
Format: Paperback Verified Purchase
I rarely compose reviews even if I happen to really appreciate a book. But THIS is one of those rare exceptions!Gelfand (who also happens to rank among the 20th Century's most renowned and prolific Mathematicians ... I noticed that no reviewer has mentioned this little fact) has written an exceptionally clear and concise, easy to read and to digest text concerning Trigonometry with advancement to higher education in mind. The perfectly logical format and development is novel, very inspiring, coaxing the reader to read on and on and one truly begins to learn right from the first sentence. The reader requires little in the way of prior knowledge and yet, I am convinced, will come away with an enthusiasm for this subject (and hopefully for Mathematics in general).

I am a member of a Mathematical Honor Society and of the Mathematical Association of America but I must confess that I was a poor math student, had some very poor teachers and, thanks to some inspiring individuals along the way, managed to discover the real magic and beauty of Math before it was too late (although I have spent the better portion of my professional life compensating for the failures of my former teachers!).

This text represents the way Math should be taught in schools. I believe that any frustrated math student will benefit from this text (and probably the other texts also by Gelfand).
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
17 of 17 people found the following review helpful By sluggo77 on August 7, 2009
Format: Paperback
This book is a very nice change away from the overly analytical approach that most trigonometry texts take nowadays. In my view something is lost when the geometric aspects are not emphasized. There is some fantastic geometry in this book, and I especially liked the connection between the sine addition formula and Ptolemy's theorem for quadrilaterals inscribed in a circle. Those kinds of connections are not only neat in themselves, but I think they help to understand the material better. I think they can spark students' interest more than the dull plug-in-the-numbers types of exercises in most books.

Speaking of the exercises, many of them are excellent. As some other reviewers have mentioned, it's nice to see a book at this level not insult the intelligence of its readers. I wish more elementary math textbooks were like this.

The only criticism I have is that there are lots of errors and typos in the book, enough to make me give it only 4 stars instead of 5. For instance, in Exercise 8 on p.147 it asks the reader to prove that (cos a)^2 <= cos(2a). Of course, that inequality should be reversed. And there are many more annoying little errors like that, which makes me believe that no one actually proofread the book.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
10 of 11 people found the following review helpful By George C. Johnson on April 6, 2007
Format: Paperback Verified Purchase
I enjoyed this textbook, especially the way some subjects were so well explained. Not only does this text cover a good bit of material, but it also reveals the way in which the author thinks about this subject. I have noticed, both with this text and the previous two which I have commented on, that certain aspects of the subject become much more transparent or understandable when reexamined with a keener mathematical ability than, at least I possessed, when I was first exposed to these subjects in high school. I had no special interest in math at that time. The limited reexposure one has to trigonomety and geometry as one learns new areas of mathematics in college doesn't seem to do justice to these foundation areas of math.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Most Recent Customer Reviews

Set up an Amazon Giveaway

Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more
This item: Trigonometry
Price: $26.74
Ships from and sold by

What Other Items Do Customers Buy After Viewing This Item?

Want to discover more products? Check out these pages to see more: algebra & trigonometry: graphs, elementary trigonometry, algebra 1