Trigonometric Functions

Wave Mathematics: Trigonometric Functions

by Gary Leo Welz, M.A./M.S.

Further Exploration

Sine Calculator

Rapid Tables, a trigonometric sine calculator

Math Online

University of Vienna - gallery of mathematical Java applets.




René Descartes

René Descartes


Commentary on the Phenomena of Aratus and Eudoxus

Picture and information of the sole surviving work of Hipparchus.

News & Events

Scientists put a light wave on hold


Current Science News

News from around the world of science.


Wave Calculator

Google Scholar

Google - Research database allows searching of the scholarly literature.


Sine Function (with unit circle)

An interactive graph from

Standing Wave Maker Interactive

From The Physics Classroom. The Standing Wave Maker Interactive allows learners to investigate the formation of standing waves, the vibrational patterns associated with the various harmonics, and the difference between transverse and longitudinal standing waves.

Next Generation Science Standards (NGSS)

Next Generation Science Standards: For States, By States

National Academies Press: A Framework for K-12 Science Education