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13:14
YouTube
Patrick J
Special Right Triangles in Geometry: 45-45-90 and 30-60-90
In this video, I discuss two special right triangles, how to derive the formulas to find the lengths of the sides of the triangles by knowing the length of one side, and then do a few examples using them! Knowing the corresponding side lengths for these special right triangles is very useful to have memorized but dont forget that you can always ...
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Jan 9, 2010
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