103 Trigonometry Problems: From the Training of the USA IMO Team (Repost)

* Problem-solving tactics and practical test-taking techniques provide in-depth enrichment and preparation for various math competitions

* Comprehensive introduction to trigonometric functions, their relations and functional properties, and their applications in the Euclidean plane and solid geometry

* A cogent problem-solving resource for advanced high school students, undergraduates, and mathematics teachers engaged in competition training