In Exercises 101114, verify the identity algebraically. Use a graphing utility to check
Chapter 6, Problem 103(choose chapter or problem)
In Exercises 101–114, verify the identity algebraically. Use a graphing utility to check your result graphically.
\(\cos ^{2} 2 \alpha-\sin ^{2} 2 \alpha=\cos 4 \alpha\)
Text Transcription:
cos^2 2 alpha − sin^2 2 alpha = cos 4 alpha
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