In Exercises 9396, use double-angle formulas to verify the identity algebraically. Use a
Chapter 6, Problem 96(choose chapter or problem)
In Exercises 93–96, use double-angle formulas to verify the identity algebraically. Use a graphing utility to check your result graphically.
\(\sin 4 x=8 \cos ^{3} x \sin x-4 \cos x \sin x\)
Text Transcription:
sin 4x = 8 cos^3 x sin x − 4 cos x sin x
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