cos 70 - cos 90 = (Simplify your answer.)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Question
![Write the expression cos 70- cos 90 as a product of two trigonometric functions.
cos 70 - cos 90 =
(Simplify your answer.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc6fbff9-4759-45b9-9f61-27046377aa96%2F3d0d9bc9-4296-41d9-808d-43b51c0fae11%2Fukbe1r2_processed.png&w=3840&q=75)
Transcribed Image Text:Write the expression cos 70- cos 90 as a product of two trigonometric functions.
cos 70 - cos 90 =
(Simplify your answer.)
![Sketch the graph of f. What is the amplitude and period?
f(x) = cos (4x + 5) + cos (4x - 5)
...
The amplitude of the function f(x) is approximately
(Type an integer or decimal rounded to three decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc6fbff9-4759-45b9-9f61-27046377aa96%2F3d0d9bc9-4296-41d9-808d-43b51c0fae11%2Ft3s11pn_processed.png&w=3840&q=75)
Transcribed Image Text:Sketch the graph of f. What is the amplitude and period?
f(x) = cos (4x + 5) + cos (4x - 5)
...
The amplitude of the function f(x) is approximately
(Type an integer or decimal rounded to three decimal places as needed.)
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