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Some links are repeated for use with more than one lesson.

The following links are applicable to the entire chapter.

http://hyperphysics.phy-astr.gsu.edu/Hbase/trid.html

This page contains a brief review of the trigonometric identities.

http://www.explorelearning.com/index.cfm?method=cResource.dspResourcesForCourse&CourseID=254

This page contains gizmos for exploring various topics in trigonometry. This website requires Shockwave Player to run some of its features.

13.1  Graphing Trigonometric Functions

http://www.regentsprep.org/Regents/math/algtrig/ATT7/indexATT7.htm

This page contains links to lessons and practice with graphing trigonometry functions.

13.2  Verifying Trigonometric Identities

http://www.karlscalculus.org/trigid_examples.html

This page contains a lesson and practice on trigonometric identities.

http://www.teachervision.fen.com/tv/printables/botr/botr_141_12-12.pdf

This page contains a free printable worksheet on using graphs to verify the identities.

13.3  Angle Sum and Difference Identities

13.4  Double-Angle and Half-Angle Identities

http://www.sosmath.com/trig/douangl/douangl.html

This page contains a lesson on double-angle and half-angle identities.

13.5  Solving Trigonometric Equations

http://www.sosmath.com/algebra/solve/solve0/solvtrig.html

This page contains practice on solving trigonometric equations.