Math Is Fun
Math Is Fun: Trigonometry
Students explore trigonometry concepts through this collection of definitions, lessons, examples problem-solving steps and strategies, and practice problems. Topics include solving triangles, trigonometric functions, theorems, and the...
Lawrence Hall of Science
The Math Page: Trigonometry: Trignometry of Right Triangles
Here is a site that clearly and thoroughly explains the trigonometry of a right triangle, including finding the values of all six trig functions given a single value. There are example problems solved, problems for the student to...
Other
Gcse Answers' Easy Start Trigonometry
Some basic questions dealing with everyday situations where trigonometry is needed to solve the problem. Click a button for the solutions.
Khan Academy
Khan Academy: Trigonometry
Reviews the basics of trigonometry and how its concepts are instrumental in computer graphics programming.
National Council of Teachers of Mathematics
The Math Forum: High School Archive for Trigonometry
This site from the Math Forum with Dr. Math is an excellent site with answers to submitted questions on trigonometry. In addition the student can submit their own questions. Links are provided for additional information.
Other
Math Mistakes: Common Trigonometry Mistakes
Learn from other student's mistakes by reviewing examples of the following Trigonometry topics: values of trigonometric functions, values of inverse trigonometric functions, solving triangles, simplifying trigonometric expressions, and...
Texas Instruments
Texas Instruments: Basic Trigonometry
Students will define basic terms relating to trigonometry and use trigonometric ratios.
Other
Interactive Trigonometry
Resource contains interactive programs that can be manipulated and animation to help students grasp basic concepts in trigonometry.
Other
University of Cambridge: Spherical Trigonometry
Very good site that acts as a tutorial/review site on Spherical Trigonometry. Many diagrams and formulas are included.
Texas Instruments
Texas Instruments: Basic Trigonometry Love or Leave It!!
This activity has the teacher to create 3 triangles on Cabri Jr. on the TI-83 or TI-84. It will prove to students how trigonometry ratios are found. It will show to the students where the ratios are derived rather than just telling the...
University of Regina (Canada)
University of Regina: Math Central: Real World Applications of Trigonometry
Trigonometry is applied in two different real world situations. Students can calculate the solutions to each problem and comprehend how trigonometry is used in real life.
Mangahigh
Mangahigh: Shape: Use Trigonometry to Find Lengths
Use trigonometry tp solve for lengths of sides.
Mangahigh
Mangahigh: Shape: Use Trigonometry to Find Angles
Use trigonometry to determie the angle measures.
Lawrence Hall of Science
The Math Page: Trigonometry: The Law of Sines
Work through an explanation of the law of sines, how it is used with an obtuse angle, and a proof of the law of sines. Great site for students studying trigonometry.
Mathigon
Mathigon: Geometry: Triangles and Trigonometry: Applications
This lesson focuses on the real world applications using triangles and trigonometry.
Mangahigh
Mangahigh: Shape: Area of a Triangle Using Trigonometry
Teat your knowledge of determing the area of a triangle using trigonometry.
Analyze Math
Analyze Math: Trigonometry: Sum and Difference Formulas Examples
The mathematics tutorial examines trigonometric formulas. The tutorial consists of examples with solutions. The tutorial demonstrates how to use sum and difference formulas to solve problems in trigonometry.
Khan Academy
Khan Academy: Adding and Decomposing Vectors Using Trigonometry
Use trigonometry to practice adding, decomposing, and finding vector angles from physics word problems.
Math Open Reference
Math Open Reference: Trigonometry Functions Introduction
A complete reference guide to trigonometry functions. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Cosine (Cos) Function Trigonometry
A complete reference guide to the cosine function in trigonometry. It provides definitions, examples, and an interactive activity that enhances further explanation.
CK-12 Foundation
Ck 12: Trigonometry: Inverses of Trigonometric Functions
[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.
Wolfram Research
Wolfram Math World: Trigonometry
This site provides a good definition of trigonometry. Includes many links to key terms and many more to related terms. This site may be used as a refresher for students who have finished the course, or students currently studying the...
Math Planet
Math Planet: Pre Algebra: Trigonometry
Learn about trigonometry by viewing examples and a video lesson.
TeachEngineering
Teach Engineering: Trigonometry via Mobile Device
Students investigate the relationships between angles and side lengths in right triangles with the help of materials found in the classroom and a mobile device.
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