11 Given the triangle find the measure of angle A using the Law of Cosines. Picture is not " 21 drawn to scale A = degrees Give your answer accurate to at least one decimal place 15/ A
11 Given the triangle find the measure of angle A using the Law of Cosines. Picture is not " 21 drawn to scale A = degrees Give your answer accurate to at least one decimal place 15/ A
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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help me solve these problems
![### Question 10:
**Use a half angle formula or formula for reducing powers to fill in the blanks in the identity below:**
\[
(\cos(5x))^2 = \boxed{\phantom{ }} + \cos(\boxed{\phantom{ }} x)
\]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb1c81f19-6b44-4c48-9f6b-8f6cecd1e5f5%2F6a64606c-06f0-4fc5-9829-e25df5085c44%2Fb1q2w5_processed.png&w=3840&q=75)
Transcribed Image Text:### Question 10:
**Use a half angle formula or formula for reducing powers to fill in the blanks in the identity below:**
\[
(\cos(5x))^2 = \boxed{\phantom{ }} + \cos(\boxed{\phantom{ }} x)
\]
![**Question 9**
Given the triangle with sides \(15\), \(11\), and \(21\), find the measure of angle \(A\) using the Law of Cosines. *Note: Picture is not drawn to scale.*
The triangle is depicted with sides labeled as follows:
- The side opposite angle \(A\) is \(21\) units.
- The side adjacent to angle \(A\) is \(15\) units.
- The other side adjacent to angle \(A\) is \(11\) units.
**Diagram Description:**
In the diagram, triangle \(ABC\) is shown with side opposite to vertex \(A\) labeled as \(21\), side opposite to vertex \(B\) labeled as \(15\), and side opposite to vertex \(C\) labeled as \(11\). \(A\) is the angle to be calculated.
**Mathematical Expression:**
\[ A = \_\_\_\_\_ \text{ degrees} \]
*Give your answer accurate to at least one decimal place.*](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb1c81f19-6b44-4c48-9f6b-8f6cecd1e5f5%2F6a64606c-06f0-4fc5-9829-e25df5085c44%2Fhmzpiob_processed.png&w=3840&q=75)
Transcribed Image Text:**Question 9**
Given the triangle with sides \(15\), \(11\), and \(21\), find the measure of angle \(A\) using the Law of Cosines. *Note: Picture is not drawn to scale.*
The triangle is depicted with sides labeled as follows:
- The side opposite angle \(A\) is \(21\) units.
- The side adjacent to angle \(A\) is \(15\) units.
- The other side adjacent to angle \(A\) is \(11\) units.
**Diagram Description:**
In the diagram, triangle \(ABC\) is shown with side opposite to vertex \(A\) labeled as \(21\), side opposite to vertex \(B\) labeled as \(15\), and side opposite to vertex \(C\) labeled as \(11\). \(A\) is the angle to be calculated.
**Mathematical Expression:**
\[ A = \_\_\_\_\_ \text{ degrees} \]
*Give your answer accurate to at least one decimal place.*
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