Texas Instruments
Texas Instruments: Discover Law of Sines
Using Cabri Jr students will be able to visualize the umbiguous case as well as when one cannot create a triangle.
Texas Instruments
Texas Instruments: Right Triangle Trig
This is a way to use the TI-Navigator to check for an understanding of sin, cos, and tan before you move onto word problems.
Texas Instruments
Texas Instruments: Investigating Sine Graphs
In this one or two day lesson, students will review general knowledge of the sine graph using a LearningCheck quiz, generate a graph based on given parameters, and create a sinusoidal model using data extracted from the Web.
Texas Instruments
Texas Instruments: Computing by Degrees!
In this activity, students use the calculator to solve trigonometry problems using sine, cosine, and tangent. They also find inverses of trigonometric functions.
Texas Instruments
Texas Instruments: Sin(x)/x
This activity explores some of the graphical properties of the function sin(x)/x.
Texas Instruments
Texas Instruments: Sine Graphs
This LearningCheck file is a review of sine graphs. The students are asked about the amplitude, period, and equations of different sine graphs.
Texas Instruments
Texas Instruments: Derivative of the Sine of a Function
Students will find the derivative of the sine function if the argument is a function of x.
Analyze Math
Analyze Math: Sine Function
The mathematics tutorial examines the sine function. The interactive tutorial explores the period, phase shift, domain, and asymptotes of the sine function.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Trig Function Graphs
Northeast Parallel Architectures Center provides a quick overview of the graphs of the six trigonometric functions, with angles measured in radians.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Trigonometric Functions
This Northeast Parallel Architectures Center of Syracuse University site offers a quick overview of the six trigonometric functions from the standpoint of the unit circle.
Wikimedia
Wikipedia: Trigonometric Function
This page from Wikipedia, a free and open-source encyclopedia, covers how to solve a variety of trigonometric equations, most of which involve substitution with a trigonometric identity. The identities themselves are not covered, but...
Other
North Carolina Su: Triangles, Circles, and Waves (Oh My!)
This site has a basic overview of trigonometry focusing on the trig functions, trig ratios, and the unit circle.
Clark University
Clark University: Dave's Short Trig Course: Trigonometric Functions
The Clark University site shows and explains the graphs of the six trigonometric functions. It explains how to find an arbitrary angle measurement using trig. Also, it explains that sine and cosine functions are complementary.
Other
Dans Math: Lessons: Trigonometry
College professor Dan Bach reviews basic trig concepts, including trig functions, right triangles, circles, radians, and polar coordinates. Site includes animated graphs and detailed examples.
Other
Interactive Trigonometry
Resource contains interactive programs that can be manipulated and animation to help students grasp basic concepts in trigonometry.
Texas Instruments
Texas Instruments: Using the Cbl 2 & Ti Navigator to Model Sinusoidal Data
The teacher will use the CBL 2 and attached probes to generate sinusoidal data. Using TI-Navigator, the teacher will send the data to the students, and the students will try to find a sine curve to model the given data.
Windstream
Ojk's Precalculus Study Page: Sum and Difference Formulas for Sine and Cosine
An introduction to trigonometric identities, beginning with the sum and difference formulas. Some of the formulas are proven, some are left to the reader. Includes several examples and pictures.
Clark University
Clark University: Dave's Short Trig Course: Summary of Trig Identities
This Clark University page is an excellent reference page for trig identities. It is a little difficult to read so take your time with the formulas. If you remember soh - cah - toa, the other formulas are right here.
Mangahigh
Mangahigh: Shape: Use the Law of Sines for Finding Lengths
Deterime how to use the law of sines for finding lengths.
CK-12 Foundation
Ck 12: Trigonometry: Sine and Cosecant Graphs
[Free Registration/Login may be required to access all resource tools.] Define the sine and cosecant graphs using a unit circle.
CK-12 Foundation
Ck 12: Trigonometry: Vertical Translations
[Free Registration/Login may be required to access all resource tools.] Define vertical translations of sine and cosine functions.
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice: Right Triangles and Trigonometry
Practice using your graphing calculator for solving right triangle trigonometry and non-right triangle trigonometry. If you get stumped or if you would like to check your work, then select the View Solution button, which is located...
Math Is Fun
Math Is Fun: Triangle Identities
View examples of triangle identities, equations that are true for all triangles: Law of Sines, Law of Cosines, and Law of Tangents. Follow links to learn more about the purpose and examples of each identity.
Math Is Fun
Math Is Fun: Trigonometric Identities
A good introduction to trigonometric identities, equations that are always true for a right triangle and require knowledge of the functions sine, cosine, and tangent.