Inversions Functions and Equations

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trig formulas

A helpful scientific calculator that runs in your web browser window.

Detailed instruction on trigonometric identities, functions, special angles, Law of Sines and Cosines, and inverse trigonometric functions.

Almost all of the Trigonometric Identities, including Reciprocal identities, Pythagorean identities, Quotient identities, Co-Function identities, Even-Odd identities, Sum-Difference formulas, Double- and Half-angle formulas, and Sum-to-Product and Product-to-Sum formulas.

Explains how we can use the unit circle to find the trig functions for any angle, explains inverse functions, and how to graph them.

The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....