Activity
Texas Instruments

Texas Instruments: Basic Trigonometry Love or Leave It!!

For Teachers 9th - 10th
This activity has the teacher to create 3 triangles on Cabri Jr. on the TI-83 or TI-84. It will prove to students how trigonometry ratios are found. It will show to the students where the ratios are derived rather than just telling the...
Activity
Lawrence Hall of Science

The Math Page: Trigonometry

For Students 9th - 10th Standards
Concepts in Trigonometry are explained and illustrated here by a member of the math department at Borough of Manhattan Community College.
Handout
Purple Math

Purplemath: Right Triangle Word Problems

For Students 9th - 10th
Demonstrates how to translate, set up, and solve basic right-triangle word problems.
Unit Plan
Khan Academy

Khan Academy: Hypotenuse, Opposite, and Adjacent

For Students 9th - 10th
In a right triangle, the hypotenuse is the longest side, an 'opposite' side is the one across from a given angle, and an 'adjacent' side is next to a given angle.

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