Provides trigonometric identities, which include fundamental identities, even-odd identities, addition formulas, double-angle formulas, subtraction formulas, product-sum formulas, and identities for sin squared and cos squared.

Young scholars will identify the attributes of shapes and use those attributes to draw and describe shapes. This lesson contains a detailed plan, pictures of student work, and videos of the lesson in action.

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.

The University of Saskatchewan provides an explanation of trigonometric identities, including the reciprocal identities, the addition and subtraction formulas with sine and cosine, and the double angle formulas. There are links to...

This list of trigonometric identities includes the factoring formulas near the bottom. A great tool for reference.

From the Princeton University Art Museum, this page looka at the a large postclassic Nahua ceramic effigy censer preserved in the museum collections. "Sorcerers of the Fifth Heaven" examines this effigy censer from all angles of it's...

Here you will learn how to understand, write, draw, and talk-the-talk of organic molecules. Why were different drawing techniques developed? Organic molecules can get complicated and large. It is a tedious to have to constantly draw out...

This lab is designed to have students find the relationships that affect the horizontal distance travelled by a projectile. Students will be able to modify the starting height, initial speed and angle at which the projectile is fired....

Using segments from the PBS program: Wide Angle, this high school lesson explores the history and complexity of the Palestinian-Israeli conflict and examines the roles individuals and organizations can play in promoting understanding and...

This site is a quick review of the functions and identities in trigonometry. Very helpful site.