SKU: 64906690751

Trigonometric Delights

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Description

Trigonometric DelightsTrigonometry has always been an underappreciated branch of mathematics. It has a reputation as a dry and difficult subject, a glorified form of geometry complicated by tedious computation. In this book, Eli Maor draws on his remarkable talents as a guide to the world of numbers to dispel that view. Rejecting the usual arid descriptions of sine, cosine, and their trigonometric relatives, he brings the subject to life in a compelling blend of history,

Trigonometry has always been an underappreciated branch of mathematics. It has a reputation as a dry and difficult subject, a glorified form of geometry complicated by tedious computation. In this book, Eli Maor draws on his remarkable talents as a guide to the world of numbers to dispel that view. Rejecting the usual arid descriptions of sine, cosine, and their trigonometric relatives, he brings the subject to life in a compelling blend of history, biography, and mathematics. He presents both a survey of the main elements of trigonometry and a unique account of its vital contribution to science and social development. Woven together in a tapestry of entertaining stories, scientific curiosities, and educational insights, the book more than lives up to the title Trigonometric Delights.
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Maor, whose previous books have demystified the concept of infinity and the unusual number e, begins by examining the proto-trigonometry of the Egyptian pyramid builders. He shows how Greek astronomers developed the first true trigonometry. He traces the slow emergence of modern, analytical trigonometry, recounting its colorful origins in Renaissance Europe's quest for more accurate artillery, more precise clocks, and more pleasing musical instruments. Along the way, we see trigonometry at work in, for example, the struggle of the famous mapmaker Gerardus Mercator to represent the curved earth on a flat sheet of paper; we see how M. C. Escher used geometric progressions in his art; and we learn how the toy Spirograph uses epicycles and hypocycles.


Maor also sketches the lives of some of the intriguing figures who have shaped four thousand years of trigonometric history. We meet, for instance, the Renaissance scholar Regiomontanus, who is rumored to have been poisoned for insulting a colleague, and Maria Agnesi, an eighteenth-century Italian genius who gave up mathematics to work with the poor--but not before she investigated a special curve that, due to mistranslation, bears the unfortunate name the witch of Agnesi. The book is richly illustrated, including rare prints from the author's own collection. Trigonometric Delights will change forever our view of a once dreaded subject.



Binding Type: Paperback
Publisher: Princeton University Press
Published: 02/24/2013
ISBN: 9780691158204
Pages: 236
Weight: 0.79lbs
Size: 9.26h x 6.34w x 0.66d
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SKU: 64906690751

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Yogesh
Waukegan, US
★★★★★ 5
Great dog toy is it to clean and good quality
Color: White - Giraffe
This is a great dark way. Love it. The squishy and the quality of this is really nice. It doesn’t break easily, so I am loving it in my dog is loving it as well, and it’s easy to clean.
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Reviewed in the United States on May 26, 2026
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IAmSciAmoor
Port Orchard, US
★★★★★ 5
Good Puppy Toy with Gentle Squeaker – Soft, Cute & Budget-Friendly
Color: White - Giraffe, Color: White - Giraffe
I bought this squeaky plush toy set for my puppy Dio, and he was immediately drawn to it. The giraffe designs are adorable, and the squeakers kept him engaged and excited during playtime. But are not annoying for my family to hear while he plays. The material is soft and gentle on his mouth, which I really liked, especially for a puppy. It’s lightweight and easy for him to carry around, and it definitely kept him entertained. One thing I would suggest for improvement is reinforcing the head or neck area which is what I did before even giving it to him to play because he is an aggressive dog. Adding extra stitching to those areas may make a big difference, especially for puppies who like to focus their chewing there. I believe this is a fun and engaging toy for our growing big puppy, especially for light to moderate chewers, Plus the price point makes it even more of a sweet gift idea.
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Reviewed in the United States on March 24, 2026
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Maggie
Natrona Heights, US
★★★★★ 3
Not suitable for all dogs, but they are cute.
Color: White&Grey&Brown
I probably over estimated their durability. My dogs tore these apart very quickly. Better for smaller dogs and ones that don't go primal over their toys!
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Reviewed in the United States on January 29, 2026
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Alex Searcy
Bozeman, US
★★★★★ 5
Very durable toy for dogs that chew!
Color: Brown Dog, Color: Brown Dog
My dogs absolutely love this toy! It is super durable and so far became their favorite go to toy since I gave it to them. Highly recommend getting this toy if you have a dog that chews alot. They have not been able to rip any parts off of this toy which is great and exactly what I wanted.
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Reviewed in the United States on May 18, 2026
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nancy g.
Carnegie, US
★★★★★ 1
Very poor quality but cute
Color: White&Grey&Brown
Poor quality…..one of the toys wasn’t sewn shut so stuffing was visible. One other toy was torn open by our small dog within five minutes of giving it to her and she is not an aggressive chewer. We are returning these items.
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Reviewed in the United States on February 17, 2026

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