More examples using 30-60-90 triangles.. All Khan Academy content is available for free at www.khanacademy.org
30-60-90 Triangles II is a free educational video by Khan Academy.It helps students in grades 9,10,11,12 practice the following standards HSG.SRT.C.6.
1. HSG.SRT.C.6 : Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.
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