Find all errors in the following: 2 sin 2 2x + cos 4x = 2(2 sin x
Question:
Find all errors in the following:
2 sin2 2x + cos 4x
= 2(2 sin x cos x)2 + 2 cos 2x
= 8 sin2 x cos2 x + 2(cos2 x + sin2 x)
= 8 sin2 x cos2 x + 2.
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In the first line cos 4x 2 cos 2...View the full answer
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Related Book For 
Algebra And Trigonometry Graphs And Models
ISBN: 9780134179049
6th Edition
Authors: Marvin Bittinger, Judith Beecher, David Ellenbogen, Judith Penna
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