Learners practice relating rules of trigonometry and properties of circles. With a few simplifying assumptions such as a perfectly round earth, young mathematicians calculate the lengths of various paths between satellite and...

Boat ramps move with waves and changes in water level. Scholars decide on the proper length for a ramp so the angle connecting both sides is appropriate. They visualize the situation and use a simulation to view the results with their...

Who's on second? Young mathematicians use a diagram of a baseball field to find the distance a catcher must throw to reach second base. A brief video of such a play during a baseball game sets the stage for the assignment.

Geometry gets an engineering treatment in an exercise involving a belt wrapped around two wheels of different dimensions. Along with the wheels, this belt problem connects concepts of right triangles, tangent lines, arc length, and...

Looking for a fun and creative way to celebrate Pi Day? Then this is the resource for you. From a scavenger hunt and trivia contest to PowerPoint presentations and skills practice worksheets, this collection of materials is a...

Using their knowledge of right triangles, pupils find out how far a ship is from a light house. Class members determine how far around the world a ship would be sailing at a constant speed.

Model geometric concepts through a hands-on approach. Learners apply similar triangle relationships to solve for an unknown side length. Before they find the solution, they describe the transformation to help identify corresponding sides.

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...

This lesson is the main SOS Math page for trigonometry. Surf the lesson to find most any trigonometric identity, formula, and many forms of help in the area of trigonometry.

This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.

A collection of lessons, practice activities, and a teacher resource that will aid your exploration and understanding of special right triangles.

Based off of the hit television show NUMB3RS, this lesson introduces students to the range of graphs which can be formed by adding and/or multiplying other trigonometric graphs together. Technology use is heavy in this lesson, in that...

This math lesson presents methods of solving trigonometric equations when the answer does not seem obvious. The lesson begins by giving an example then has a few practice problems for viewers to solve with solutions as links.

This math lesson lists the product and sum formulas, and gives detailed example of using them to solve algebraic trigonometry problems.

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...

Based off of the hit television show NUMB3RS, this lesson introduced students to the various parameters used in graphing the elementary sine function. Technology use is very heavy, as students are encouraged to graph different sinusoidal...

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.

Given a reference angle, you can find the trigonometric functions of any angle. The process is demonstrated in this lesson and examples are provided for practicing the concept.

BBC provides a three part lesson on solving triangles, by using the sine rule and cosine rule.

Just about everything you need to know about trigonometry can be found here. Interactive examples and demonstrations help to enhance the lessons. Although not required, the tutorial uses Live Math and Scientific Notebook.

Introductory lesson to trigonometric functions. Includes definitions, properties, graphs, and a wide variety of examples and practice exercises.

This lesson contains trigonometric equations of various forms that you can solve. The problems contain the answers solved in three different ways: algebraically, graphically, and using the concept of equivalence.

Having trouble integrating those tough functions? Try using Trigonometric Substitution. This lesson demonstrates the process and allows for you to practice using the examples provided.

Based off of the hit television show NUMB3RS, this lesson has students set up a search region for a yacht that sank into the ocean. Using cylindrical coordinates and a little trigonometry, students are able to block off a certain portion...