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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KiKi
Dallas, US
★★★★★ 1
Shipping department dropped the ball
Color: Dark Brown, Color: Dark Brown
I am ashamed that Amazon would claim to be an outfit that deals in luxury bags. The packaging and merchandise handlers really dropped the ball. The purse was very nice and well made. ( with the exception of the long strap 👎 ) it’s a shame this bag was tossed in the box that way I received this leather bag it was all wadded up and wrinkled in all the wrong places such as a huge wrinkle across the bottom. $139. For a bag that’s looks like it’s been in the corner of someone’s closet for months or maybe like the UPS truck ran over it. Not cool. Luxurious expensive merchandise you would expect at least a little care and packaging and handling. Disappointed
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Reviewed in the United States on October 29, 2025
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DL
Dallas, US
★★★★★ 5
Absolutely soft leather
Color: Coffee
I ordered the coffee color, absolutely love it.Super soft- I have ordered brands that cost 4xs as much & returned because of stiff leather. The zippers simply glide.I love all the different zipper pockets, I like having a place for everything, my phone fits perfectly in the back side zipper area. The front magnetic for my key fob.Zipper above to get out quick cash.I had a hard time deciding which color I wanted! It's roomy enough inside but not too big where Im going to carry things I dont need. It's nice having 2 straps to trade out- im starting with the guitar strap- like that it is adjustable straps & on swivel hooks.And you can really smell the genuine leather. For my preference I would have liked it to have been 2 to 3 inches shorter height wise as I was looking to replace a few bags I used when flying but this is perfect for an everyday crossbody.This bag looks very well made. Nothing fancy on the inside. Plan on searching for this brand in smaller size and some soft colors for spring & summer.
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Reviewed in the United States on February 19, 2026
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Tabatha
Lake Worth, US
★★★★★ 5
So incredibly happy with this purse! You will be so happy you bought this. Beautiful!
Color: Brown
Thrilled from the start! Real leather , the zipper hardware great quality. Love the guitar strap. Love all of the pockets. Great purse, great design! Real genuine leather!
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Reviewed in the United States on May 16, 2026
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M. Gordon
Chelsea, US
★★★★★ 5
Definitely would recommend
Color: Brown, Color: Brown
This bag had soft leather and looked just like the picture on the product page. There is the main compartment, two zippers and two slip pockets on the inside. I do like the bag, but I don’t usually like slip pockets because a lot of times when you’re just throwing things into the bag items might go into a slip pocket without you realizing it. I didn’t pay attention to this when I bought the bag, but I still really like it. On the back is a large compartment with a zipper. On the front is another large compartment with a zipper and a pocket with a magnetic snap. I bought the brownish color one and it’s really beautiful. I would definitely recommend it. It does come with two straps I am trying out the one they call Boho for now. It is very nice. The other one which I guess is leather also is much thinner.
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Reviewed in the United States on February 4, 2026
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Cab98
Bozeman, US
★★★★★ 5
STURDY, WELL MADE, AND ATTRACTIVE BUT..
Color: Coffee
The title say everything there is to say about this purse. I especially loved the two outside pockets that worked perfectly for my phone, keys etc. making them easily accessible. Unfortunately the inside zipped compartment that many find useful was the bane of my life.. I could not remember whether I had put something inside the zipped pocket or on either side - and if so on which side. Besides which all small things (lipstick, small pill case, etc) fell on their side and were very difficult to see and find in the black interior. I guess I am too used to a purse organizer (light colored) which has stiff pockets in which everything stands up vertically. All it takes is a glance to locate what you need.. I had to, almost regretfully, return this purse but lesson learned - only buy a purse minus middle pocket which leaves no room for an organizer.
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Reviewed in the United States on April 3, 2026

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