Activity
University of Vienna (Austria)

University of Vienna: Trig Functions With Absolute Value Differentiable or Not?

For Students 9th - 10th
Given eight trigonometric functions containing absolute value elements, choose whether each is differentiable or non-differentiable. At the conclusion of the exercises, the site returns a score which helps judge understanding of the topic.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Trigonometric Functions

For Students 9th - 10th Standards
Hotmath provides 24 practice problems relating to trigonometric functions. Each of the practice problems include a step-by-step guide for solving their function.
Activity
Math Medics

S.o.s. Math: Table of Trigonometric Identities

For Students 9th - 10th Standards
This tutorial highlights the numerous trigonometric identites (but does not define the basic trigonometric functions).
Unit Plan
Windstream

Ojk's Precalculus Study Page: Inverse Trig Functions

For Students 9th - 10th Standards
An introduction to the inverse trigonometric functions, concentrating on the domain restrictions, which are explained graphically. Several examples and exercises with solutions are included, as well as a quiz.
Activity
Analyze Math

Analyze Math: Using Trigonometric Identities

For Students 9th - 10th Standards
The mathematics tutorial explores trigonometric identities. The tutorial consists of several examples with detailed solutions and practice problems. The tutorial demonstrates how to use trigonometric identities.
Handout
Purple Math

Purplemath: Inverses of Trigonometric Ratios

For Students 9th - 10th Standards
You know that you can take side lengths and find trig ratios, and you know you can find trig ratios (in your calculator) for angles. What is missing is a way to go from the ratios back to the original angles. And that is what "inverse...
Activity
Texas Instruments

Texas Instruments: Geometric Representation of Trig Functions

For Teachers 9th - 10th Standards
Using similar triangles, a relationship is established between the six trigonometric functions of an angle and simple line segments. These relationships are then confirmed using line segment measurement capabilities of the graphing...
Unknown Type
McGraw Hill

Glencoe Mathematics: Quiz on Trigonometric Ratios in Right Triangles

For Students 9th - 10th Standards
The online assessment demonstrates knowledge of advanced mathematical concepts in Algebra II. The questions test students on trigonometric ratios in right triangles.
Unknown Type
McGraw Hill

Glencoe: Online Study Tools: Quiz on Verifying Trigonometric Identities

For Students 9th - 10th
Students show understanding of advanced mathematical concepts in Trigonometry. The online quiz tests the scholars on verifying trigonometric identities.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Trigonometric Ratios

For Students 9th - 10th
Sixteen problems cover a variety of topic of trigonometric ratios. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check each...
Unit Plan
Other

Chat: Inverse Trig Functions [Pdf]

For Students 9th - 10th Standards
This site is a presentation that discusses how to graph inverse trigonometric functions. Topics included on the presentation are inverse sine, cosine and tangent functions.
Activity
Texas Instruments

Texas Instruments: Derivatives (Trig Functions)

For Teachers 9th - 10th
This learning check activity will test the students knowledge of the derivatives of the 6 trigonometric functions.
Activity
Math2

Math2.org: Trigonometric Identities

For Students 9th - 10th Standards
This personal site is a listing of numerous trig identities. A great reference site.
Activity
Windstream

Ojk World of Math: Relationships Between the Functions

For Students 9th - 10th Standards
This tutorial discusses relationships among all the trig identities. Examples are given on how to apply them to simplify trig expressions and prove identities.
Activity
University of Vienna (Austria)

Univ of Vienna: Trigonometric Functions

For Students 9th - 10th
An interactive tool to discover how the trig functions came to be. Applets are used in this interactive learning tool. Examples exercises are also given.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Inverses of Trigonometric Functions

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to find the domain and range of inverse trigonometric functions by utilizing the reflection principle.
Lesson Plan
Better Lesson

Better Lesson: Algebra Ii: The Trigonometric Functions

For Teachers 10th - 12th Standards
A lesson plan where students will interpret the trigonometric functions in terms of the unit circle, graph a sinusoidal function, and use a sinusoidal function to make interpretations in a modeling context.
Unit Plan
CK-12 Foundation

Ck 12: Definition of the Inverse of Trigonometric Ratios

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Explain the inverse of trigonometric functions.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Srt Defining Trigonometric Ratios

For Teachers 9th - 10th Standards
The purpose of this task is to use the notion of similarity to define the sine and cosine of an acute angle. Aligns with G-SRT.C.6.
Activity
University of St. Andrews (UK)

University of St. Andrews: Trigonometric Functions

For Students 9th - 10th Standards
This site from the University of Saint Andrews provides an historical look at the origins of trig functions. This site ties together mathematics and history from Hipparchus to Ptolemy to Lambert.
Activity
Lawrence Hall of Science

The Math Page: Trigonometry: Trig Functions of an Acute Angle

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains the trigonometric functions of acute angles within a right triangle. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point...
Activity
University of Saskatchewan (Canada)

University of Saskatchewan: Trigonometric Functions

For Students 9th - 10th Standards
This site examines the six trigonometric functions from a right triangle point of view. Provides information, examples, and lots of exercises for understanding.
Unknown Type
Oswego City School District

Regents Prep: Applications of Trigonometric Graphs

For Students 9th - 10th Standards
Students can use this site to practice questions dealing with trigonometric graphs. Students are challenged with multiple real-world problems and after solving those problems they can check their solution online.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Inverse Trigonometric Functions

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers the inverses of all six trig functions.

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