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Khan Academy: Special Right Triangles Unknown Type
Khan Academy

Khan Academy: Special Right Triangles

For Students 9th - 10th Standards
Use your knowledge of 30-60-90 and 45-45-90 triangles to solve some problems.
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Activity
Ojk's Precalculus Study Page: Evaluating and Graphing Sine and Cosine Activity
Windstream

Ojk's Precalculus Study Page: Evaluating and Graphing Sine and Cosine

For Students 9th - 10th Standards
An introduction to graphing the sine and cosine functions by using the 30-60-90 and 45-45-90 right triangle values of the two functions as guides.
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