In Example 2, change 2x to 3x and then simplify. Data from Example 2 Simplify the expression

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In Example 2, change 2x to 3x and then simplify.

Data from Example 2

Simplify the expression cos² 2x − sin² 2x. Since this is the difference of the square of the cosine of an angle and the square of the sine of the same angle, it fits the right side of Eq. (20.22). Therefore, letting α = 2x, we have

cos² 2x − sin² 2x = cos 2(2x) = cos 4x

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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Question Posted: Apr 07, 2023 03:45 AM

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In Example 2, change 2x to 3x and then simplify. Data from Example 2 Simplify the expression

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Sure Heres the modified example Example 2 Simplify the expression cos 2x sin 2x ...View the full answer

Basic Technical Mathematics

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