# Algebra 2 - First Edition

## Chapter 13: Trigonometric Functions

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### 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.themathpage.com/aTrig/trigonometry-of-right-triangles.htm
This page contains links to lessons and practice with graphing trigonometry functions.

### 13.2 Verifying 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.

### 13.4 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.