Concept explainers
We can use identities to help us solve trigonometric equations.
2. Using a Double-Angle Formula we see that the equation sin x + sin 2x = 0 is equivalent to the equation _____. Factoring, we see that solving this equation is equivalent to solving the two basic equations _____ and _____.
To fill: The blank in the statement “Using a Double-Angle Formula we see that the equation
Answer to Problem 2E
The complete statement is “Using a Double-Angle Formula we see that the equation
Explanation of Solution
Consider the function,
Solve the equation as follows.
Therefore, the given equation is equivalent to
Now, find the factor of the two basic solutions of
Therefore, the factor of two basic solutions are
Chapter 7 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
Additional Math Textbook Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
Precalculus: A Unit Circle Approach (3rd Edition)
University Calculus: Early Transcendentals (3rd Edition)
Calculus: Early Transcendentals (3rd Edition)
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning