To find:the solutions of the given equation and check whether the double angle is used or not. If not, then which method is used.
Answer to Problem 9OE
Inverse theorem,
Explanation of Solution
Given:
The given equation is
Calculation:
As thegiven equation is
Now, to find the solutions of the given equation. Therefore,
No, thedouble angle is not used, just use the inverse theorem
Hence, the solutions of the given equation is
Chapter 14 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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