Learners investigate the different properties of trigonometry. In this precalculus instructional activity, students find the six different identities of trigonometric ratios. They relate the ratios to that of a right triangle and apply...

Demonstrates how to evaluate trigonometric functions by using trig identities.

Lists the basic trigonometric identities, and specifies the set of trig identities to keep track of, as being the most useful ones for calculus.