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Chapter 8: Right Triangle Trigonometry

Difficulty Level: At Grade Created by: CK-12

Chapter 8 explores right triangles in far more depth than Chapters 4 and 5. Recall that a right triangle is a triangle with exactly one right angle. In this chapter, we will first prove the Pythagorean Theorem and its converse, followed by analyzing the sides of certain types of triangles. Then, we will introduce trigonometry, which starts with the tangent, sine and cosine ratios. Finally, we will extend sine and cosine to any triangle, through the Law of Sines and the Law of Cosines.

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Date Created:
Feb 23, 2012
Last Modified:
Apr 29, 2014
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CK.MAT.ENG.SE.2.Geometry.8