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A few more 45-45-90 examples and an introduction to 30-60-90 triangles. Watch the next lesson: https://www.khanacademy.org/math/geometry/right_triangles_topic/cc-geometry-trig/v/basic-trigonometry?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the previous lesson? https://www.khanacademy.org/math/geometry/right_triangles_topic ...
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