Concept explainers
(a)
The exact value of
(a)
Answer to Problem 8CR
Solution:
The exact value of
Explanation of Solution
Given information:
Explanation:
To find
Since
As
Let
The
Plugging
Since
Thus,
Therefore, the exact value of
(b)
The exact value of
(b)
Answer to Problem 8CR
Solution:
The exact value of
Explanation of Solution
Given information:
Explanation:
From part(a)
As
Therefore,
Therefore, the exact value of
(c)
To calculate: The exact value of
(c)
Answer to Problem 8CR
Solution:
The exact value of
Explanation of Solution
Given information:
Formula used:
The double angel formula:
Calculation:
From part (a)
Since
Thus,
By using the double angel formula,
Therefore, the exact value of
(d)
To calculate: The exact value of
(d)
Answer to Problem 8CR
Solution:
The exact value of
Explanation of Solution
Given information:
Formula used:
The double angel formula:
Calculation:
By using double angel formula,
Thus,
Therefore, the exact value of
(e)
To calculate: The exact value of
(e)
Answer to Problem 8CR
Solution:
The exact value of
Explanation of Solution
Given information:
Formula used:
The half angel formula:
Calculation:
From part a),
By using half angel formula:
As
Since the value of
Thus,
Therefore, the exact value of
(f)
To calculate: The exact value of
(f)
Answer to Problem 8CR
Solution:
The exact value of
Explanation of Solution
Given information:
Formula used:
The half angel formula:
Calculation:
From part a),
By using the half angel formula:
Since the value of
Thus,
Therefore, the exact value of
Chapter 7 Solutions
Precalculus
Additional Math Textbook Solutions
University Calculus: Early Transcendentals (3rd Edition)
Precalculus Enhanced with Graphing Utilities (7th Edition)
Calculus and Its Applications (11th Edition)
Calculus: Early Transcendentals (2nd Edition)
Glencoe Math Accelerated, Student Edition
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