8 Applications of Trigonometry Surveyors use a method known as triangulation to measure distances when direct measurements cannot be made due to obstructions in the line of sight. 771 8.1 The Law of Sines 8.2 The Law of Cosines Chapter 8 Quiz 8.3 Geometrically Defined Vectors and Applications 8.4 Algebraically Defined Vectors and the Dot Product Summary Exercises on Applications ofTrigonometry and Vectors 8.5 Trigonometric (Polar) Form of Complex Numbers; Products and Quotients 8.6 De Moivre’s Theorem; Powers and Roots of Complex Numbers Chapter 8 Quiz 8.7 Polar Equations and Graphs 8.8 Parametric Equations, Graphs, and Applications
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