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Trigonometry, branch of mathematics that deals with the relationships between the sides and angles of triangles and with the properties and applications of the trigonometric functions of angles. The two branches of trigonometry are plane trigonometry, which deals with figures lying wholly in a single plane, and spherical trigonometry, which deals with triangles that are sections of the surface of a sphere. ~Encarta Encyclopedia


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Right Triangles and the Sine Ratio Right Triangles and the Tangent Ratio  Right Triangles and the Cosine Ratio


 
Right Triangle and the Sine Ratio Interactive Problems Worksheet Quiz Right Triangle and the Tangent Ratio Interactive Problems Right Triangle and the Cosine Ratio Interactive Problems Worksheet Quiz