In Spanish. Observe the relationships between the trigonometric functions then test your knowledge with the activities at the end.

[Free Registration/Login may be required to access all resource tools.] This lesson covers secant, cosecant, and cotangent.

[Free Registration/Login may be required to access all resource tools.] This lesson covers the three trigonometric ratios: sine, cosine, and tangent.

[Free Registration/Login may be required to access all resource tools.] Advanced applications of trigonometric identities.

[Free Registration/Login may be required to access all resource tools.] Define the cosine and secant graphs using a unit circle.

[Free Registration/Login may be required to access all resource tools.] Use Law of Cosines and Law of Sines in different triangle situations.

Learn how to use trig functions to find an unknown side length in a right triangle.

Great application of trig and introduction to the trig functions. Also found here are the Law of Sines and Law of Cosines as well as other trig topics to review.

[Free Registration/Login Required] Students will determine the angle of depression using a diagram with a helicopter. Click learn more to watch a video and click challenge me to answer a practice question.

The formulas for working with the derivatives of inverse trigonometry functions (arccos, arcsin, etc.) are presented here, along with several examples of how to find such derivatives. The exercises allow you to work the problems before...

A math tutorial for many areas of math that contains over 2,500 pages of explanations and examples in algebra, trigonometry, calculus, and basic mathematics. Also has exams and ask-an-expert function.

Take a tour of trigonometry using degrees or radians! Look for patterns in the values and on the graph when you change the value of theta. Compare the graphs of sine, cosine, and tangent.

Working in small groups, students complete and run functioning Python codes.This requires students to understand the logic employed, and then they must make modifications to the code in order to find the slopes of tangents to a variety...

This online scientific/math calculator supports functions for algebra and trigonometry. Operates using both the keys on the computer keyboard or pressing the keys on the calculator with the mouse or a combination of both.

Given eight trigonometric functions containing absolute value elements, choose whether each is differentiable or non-differentiable. At the conclusion of the exercises, the site returns a score which helps judge understanding of the topic.

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.

A trigonometry "cheat sheet" to use as a reference when completing trigonometry homework. Lists basic facts, properties, identities, formulas, and inverse trigonometric functions.

Explore sine, cosine, and tangents compared to the selected angle.

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

[Free Registration/Login Required] Students explore trigonometric functions using the interactive features of Activstudio. Students apply their understanding of trigonometric sense to determine the side lengths and angles of various...

Students can use this site to practice questions dealing with trigonometric graphs. Students are challenged with multiple real-world problems and after solving those problems they can check their solution online.