Mathematical Problems and Proofs: Combinatorics, Number Theory, and Geometry Por Branislav Kisacanin

PROBLEMS IN GEOMETRY KUTEPOV AND RUBANOV

THE BOOK CONTAINS A COLLECTION OF 1351 PROBLEMS ( WITH ANSWERS ) IN PLANE AND SOLID GOMETRY FOR TECHNICAL SCHOOLS AND COLLEGES.
LINK
https://www.mediafire.com/?1pxu8hgg6s496vi

A Practical Text-Book on Plane and Spherical Trigonometry by Webster Wells

This work is intended as a practical text-book on Plane and Spherical Trigonometry, adapted to the needs of High Schools and Colleges. While considerable space has been devoted to the development of the theoretical portions of the subject, the practical applications of the formulæ have not been neglected, and in the chapters on the Solution of Triangles will be found a carefully selected assortment of exercises and examples, arranged with the view of giving the student a thorough drill in numerical computation.
LINK
http://www.forgottenbooks.org/books/A_Practical_Text-Book_on_Plane_and_Spherical_Trigonometry_1000116548 

Higher Algebra by Herbert E. Hawkes

Higher Algebra

by Herbert E. Hawkes

This text is prepared to meet the needs of the student who will continue his mathematics as far as the calculus, and is written in the spirit of applied mathematics.
LINK
http://www.forgottenbooks.org/books/Higher_Algebra_1000002647 

College Algebra: Review 1 - Systems of Equations

College Algebra: Lecture 22 - Basic Logarithms

Chinese Mathematics Competitions and Olympiads, Book 2: 1993-2001

LINK WEBSITE SOURCE
http://eek.diary.ru/p126795347.htm

MathHistory12: Non-Euclidean geometry