Some trigonometric equations can be solved only numerically. But a great many can be solved in closed form and simple procedures. This web page shows you how to do it in five steps (or fewer)!

This section explores the relationship between right triangles, circles, and trigonometry. It investigates how a right triangle that is set inside a circle and rotates around the circle is connected to trigonometric functions and their...

Students show understanding of advanced mathematical concepts in Trigonometry. The online quiz tests the scholars on verifying trigonometric identities.

Angles are key to Trigonometry. Learn definitions of the parts of an angle, degrees, and radians, identify the standard position of an angle, convert between radians and degrees, and more.

The tutorial examines trigonometric derivatives. Formulas, graphs, and an example are included.

[Free Registration/Login may be required to access all resource tools.] Developing exponential decay models with Algebra

This WebMath site is a java program that will simplify a trig expression. This is a good site to use to check answers to problem sets. Read the site instructions carefully.

In this lesson students will apply the interest formulas to make the best investment decision for our fictional character Algebrea Calculique. The students will be provided with a story explaining the situation that Algebrea faces and...

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...

This is a site for students and teachers of all grade levels. If you are looking for math tables, general information about math topics, or you would like to ask a question, this is the site to visit.

You are designing and marking out the running track for a new Olympic stadium. Where should the staggered starting positions be marked for the 200m and 400m events? This activity is aimed at Key Stage 4 students (age 14-16).

This resource is a quick review of the functions and identities in trigonometry.

This resource is a quick review of the functions and identities in trigonometry.

The applications presented here demonstrate how the derivatives of trigonometric functions are used in real world problems.

An overview of the six trig functions and their graphs. The site is a little difficult to navigate but is good for finding a graph of a trig function.

[Free Registration/Login Required] Students use the interactive features of Activstudio to graph various functions.

Trigonometry ratios and their signs are given in this explanation of the other trig functions. Graphs of tangent, cotangent, secant, and cosecant are given. Examples are included.

[Free Registration/Login may be required to access all resource tools.] Explain the inverse of trigonometric functions.

This personal site is a listing of numerous trig identities. A great reference site.

[Free Registration/Login Required] This flipchart shows the basic relationships between trig functions and the sides and angles of a right triangle.

Sketches of the graphs of the 12 "parent," trigonometry functions are given: sine, cosine, tangent, secant, cosecant, cotangent, arcsine, arccosine, arctangent, arcsecant, arccosecant, and arccotangent.

Sketches of the graphs of the 12 "parent," trigonometry functions are given: sine, cosine, tangent, secant, cosecant, cotangent, arcsine, arccosine, arctangent, arcsecant, arccosecant, and arccotangent.

Sketches of the graphs of the 12 "parent," trigonometry functions are given: sine, cosine, tangent, secant, cosecant, cotangent, arcsine, arccosine, arctangent, arcsecant, arccosecant, and arccotangent.

Sketches of the graphs of the 12 "parent," trigonometry functions are given: sine, cosine, tangent, secant, cosecant, cotangent, arcsine, arccosine, arctangent, arcsecant, arccosecant, and arccotangent.