103 Trigonometry problems
Andreescu, Titu and Feng, Zuming
103 Trigonometry problems from the training of the USA imo team - - Boston Birkhauser 2009 - 214 p.
9788181283399
516.24 AND
103 Trigonometry problems from the training of the USA imo team - - Boston Birkhauser 2009 - 214 p.
9788181283399
516.24 AND