Concept explainers
DISCOVER ■ PROVE: More Reduction Formulas By the Angle-Side-Angle Theorem from elementary geometry, triangles CDO and AOB in the figure to the right arc congruent. Explain how this proves that if B has coordinates (x, y), then D has coordinates (− y, x). Then explain how the figure shows that the following reduction formulas are valid:
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Chapter 5 Solutions
Precalculus: Mathematics for Calculus (Standalone Book)
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALTrigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning