Title Special Right Triangles 30º 60º 90º Author SFSD Last modified by SFSD Created Date PM Company SFSD Other titlesSpecial Right Triangles A special right triangle is one which has sides or angles for which simple formulas exist making calculations easy Of all these special right triangles, the two encountered most often are the 30 60 90 and the 45 45 90 triangles For example, a speed square used by carpenters is a 45 45 90 triangleAlthough all right triangles have special features – trigonometric functions and the Pythagorean theoremThe most frequently studied right triangles, the special right triangles, are the 30, 60, 90 Triangles followed by the 45, 45, 90 triangles
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