Teacher Resources for Instructional Planning


Geometry Std 10: Find the missing measures of sides and angles in right triangles by applying the right triangle definitions of sine, cosine, and tangent

Lesson Plans Trigonometry Drills Two of these activities have specifically been created to enhance students' abilities to appreciate and use trigonometry as a tool in problem solving Solving for a Side This has three ways to remember the ratios, gives steps for solving for a missing side, and has practice examples. This is not necessarily using special right triangles. Sine, Cosine, and Tangent A lesson where the three ratios are defined and applied.

Resources: The history of Trigonometry. This is a great site to help fill in some of the history of the development of the trigonometric functions. Trigonometric Realms An introduction to right triangle trigonometry. Includes an interactive triangle which allows the student to change the angle and observe the sine, cosine, and tangent change with it. Trig Point Definitions Trigonometric definitions relating a coordinate on the Cartesian plane to the graph of trigonometric functions. Manipulate the point and watch the curve change. Math.com A great site for students to read about trigonometry. Edhelper.com Randomly generated worksheets on trigonometry. Trigonometry Applet Resource for Trigonometry including a java applet that shows the geometric relationship among all six trigonometric functions. It is an online tutorial that teaches trigonometry relating it to geometry, history, and functions. The best on the web! Common Angles Around a Circle Interactive common angles applet.
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