Texas Instruments
Texas Instruments: What's the Trig?
Students will be introduced to right triangle trigonometry. They will use the TI-89 and Geometer's Sketchpad to construct a right triangle and calculate sin, cosine, and tangent of various acute angles.
Texas Instruments
Texas Instruments: Trig Ratios Exploring Sine, Cosine and Tangent
Using the Cabri Jr. App and the 83+/84+ calculators, students explore and calculate the various trig ratios. This is an easy construction but be sure to allow plenty of time for exploration and completion of the worksheet questions in...
Texas Instruments
Texas Instruments: Real Life Real World Activity: Air Traffic Control
In this lesson, students will model and solve air traffic control problems with geometry software. The Cabri Jr. application will be used to construct a model of the problem situation and concepts from trigonometry and proportions are...
Texas Instruments
Texas Instruments: Basic Trigonometry
Students will define basic terms relating to trigonometry and use trigonometric ratios.
Texas Instruments
Texas Instruments: Visiting the Rich History of Geometry Using the Ti 92
In this activity, students study various geometric theorems.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Smile: Smile Program Mathematics Index
This site provides lesson plans for various math topics, including probability, geometry, algebra, trigonometry, patterns, applied math.
Math Medics
S.o.s. Math: Inverse Hyperbolic Functions
This lesson has information explaining the Inverse Hyperbolic Functions. There is a worked example that the student can look over and one that the student can work and check the answer.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Introduccion a La Trigonometria
This is an interactive activity introducing the concept of trigonometry and working with trigonometric functions to solve right triangles.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Razones Trigonometricas
In Spanish. In this interactive activity you will learn about the six trigonometric ratios, discover relationships between the trigonometric ratios of complementary and supplementary angles and the relationship between the sides of a...
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Razones Trigonometricas De Algunos Angulos
In Spanish. Observe the relationships between the trigonometric functions then test your knowledge with the activities at the end.
University of Saskatchewan (Canada)
Exercises in Math Readiness for University Study: Trig
Read a lesson, look at examples, and try easy, medium, and advanced problems from a variety of trigonometry topics: radian measure of angles, trigonometric functions, trigonometric identities, and modeling with trigonometric functions.
Wikimedia
Wikipedia: Trigonometria
In Spanish. An overview of trigonometry, trigonometric functions, and hyperbolic functions. A great resource page.
Other
All Elementary Mathematics: Trigonometric Equations
This site gives a definition for what a trigonometric equation is, gives a listing of the simplest trigonometric equations, and lists seven main methods of solution of trigonometric equations with examples.
Other
Charles Sturt University: Mathematics
The Univerisity of Charles Sturt provides math help in various areas including trigonometry. Site includes copies of past exams with solutions.
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.
Clark University
Clark University: Dave's Short Trig Course
This Clark University trigonometry tutorial site features questions and answers about what students can learn from trigonometry.
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.
Math Planet
Math Planet: Algebra 2: Cosines
Defines and explores the law of cosines through examples and a video lesson. [1:41]
McGraw Hill
Glencoe Mathematics: Online Study Tools: Self Check Quiz on Right Triangles
The online assessment demonstrates knowledge of concepts utilized in Geometry. The multiple choice questions test students on right triangles and trigonometry.
NASA
Nasa: What Is Trigometry Good For?
This site from NASA is for anyone who has ever asked "Why do I need to know this," this is a must read for you. It documents historical uses of trigonometry.
Math Medics
S.o.s. Math: Double Angle and Half Angle Formulas
Double angles and half angles are explained through step by step examples. The steps are clear and easy to follow.
Math Words
Math words.com: Trig Identities
This MathWords.com site lists the equations for all of the trigonometric identities.