The new equation is cos 20- cos 0 = Notice that the quadratic formula can be applied to this equation. 49 Use the quadratic formula to find the value of cos 0. Remember that cos 0 must be negative. 2 cos 0 7 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
The new equation is cos 20- cos 0 = Notice that the quadratic formula can be applied to this equation. 49 Use the quadratic formula to find the value of cos 0. Remember that cos 0 must be negative. 2 cos 0 7 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Based on the Image, I am unsure how to apply the quadratic formula to result in:
| cosθ = - 2/7 |
an explanation would be appreciated.
(More information can be posted if needed)
![**Quadratic Equation and Cosine**
The new equation is \( \cos^2 \theta - \cos \theta = \frac{18}{49} \). Notice that the quadratic formula can be applied to this equation.
Use the quadratic formula to find the value of \( \cos \theta \). Remember that \( \cos \theta \) must be negative.
\[ \cos \theta = -\frac{2}{7} \]
(Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F19704f9d-1875-4a7e-82f5-f1626fdf5db0%2F9377d920-ca90-42dc-aaa7-9bf52b7c2a16%2Fry0yrxh_processed.png&w=3840&q=75)
Transcribed Image Text:**Quadratic Equation and Cosine**
The new equation is \( \cos^2 \theta - \cos \theta = \frac{18}{49} \). Notice that the quadratic formula can be applied to this equation.
Use the quadratic formula to find the value of \( \cos \theta \). Remember that \( \cos \theta \) must be negative.
\[ \cos \theta = -\frac{2}{7} \]
(Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
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