Trigonometry, a work in the collection of the Gelfand School Program, is the result of a collaboration between two experienced pre-college teachers, one of whom, I.M. Gelfand, is considered to be amon
This significantly expanded Second Edition features400 morebeautiful, challenging, and instructive problems from algebra, geometry, trigonometry, combinatorics, and number theory from num
BEN WAKEFIELD is the most bullied boy at Scarr Hill High; MR LI is the most accident prone person in Hong Kong. When their paths cross it is the beginning of Ben’s journey into another world - a paral
