Provides explanations, diagrams, problems, and answers for basic trigonometry concepts and problems. 4-00

Provides an explanation and problems for solving right triangles. Includes answers. 4-00

Provides a lesson and the missing information when you fill in portions of the problem. 4-00

Lists

Includes right angles, circles, lines, polyhedra, triangles, finding the hypotenuse, and more. 5-00

Provides nearly three dozen sources on trigonometry. 5-00

Papers

Provides close to two dozen articles on trigonometry. 4-00

Provides definitions and graphs of trigonomic functions. Includes an animation of sin(x). 4-00

Provides formulas and diagrams for triangles. 5-00

Provides an online calculator to solve simple problems. Includes a calculator for powers and also square roots. 4-00

Provides a history of trigonometry functions and the mathematicians behind their discovery. 4-00

Includes key questions asked by high school students about trigonometry problems. 7-99