Trigonometry has always been the black sheep 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, h...(展开全部)

Professor Zygmund's Trigonometric Series, first published in Warsaw in 1935, established itself as a classic. It presented a concise account of the main results then known, but was on a scale which limited the amount of detailed discussion possible. A greatly enlarged second edition published by Cambridge in two volumes in 1959 took full account of developments in trigonometric...(展开全部)

Elisabetta Lattanzio Illy was born in Trieste and received her degree in International Economics from Trieste University. She has been a journalist since 1999 and writes regularly for BMM (a quarterly magazine on culture and lifestyle), Monsieur, Spirito diVino, and I Viaggi del Sole (a monthly supplement of Il Sole 24 Ore).