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Virginia Department of Education
Special Right Triangles and Right Triangle Trigonometry
Right triangles are so special! Use special right triangles to discover the trigonometric ratios. Pairs construct special right triangles and find the values of the ratios of the sides. In the process, they discover the ratios stay the...
Curated OER
Trigonometric Ratios
Students measure and analyze angles. In this trigonometry lesson plan, students measure angles and distances use non-traditional techniques. They identify the different ratios of sine, cosine and tangent.